He stormed straight off down the tunnel instead of taking a seat in the dugout after being replaced by David Connolly in the second half on Saturday.
But the Senegal inter-national realised the error of his ways over the weekend and apologised to manager Paul Jewell and his team-mates before training yesterday.
Latics have now drawn a line under the incident without any further action being taken, and Camara is expected to keep his place for Saturday's visit to Aston Villa.
It hadn't been the best week for the striker leading up to the Newcastle game, with his chances of reaching the World Cup with Senegal dashed when Togo pipped them in qualification.
And he believes that disappointment was playing on his mind when he was hauled off with 13 minutes left.
Camara said: "It's the first time I've done something like this and it was a heat of the moment thing which I regret.
"I've apologised to the manager and my team-mates, and understand that no player is bigger than the club.
"I was tired after a bad week with Senegal and I think the disappointment of not getting to the World Cup hit me a lot more than I thought."
Jewell was pleased to get the apology, having accused the striker on Saturday of showing 'a little bit of disrespect' towards the other members of the squad.
And he says the incident is now forgotten, with all attention trained towards the trip to Villa and hopefully the extension of their six-game Premiership unbeaten run.
Jewell said: "It has all been sorted out now, I wasn't best pleased at what happened and Henri has realised he was wrong.
"I think it was just frustration on his part but people have to learn to show their frustration in a better fashion.
"I don't expect players to be happy when they're substituted, but sometimes you have to make decisions people don't like and they have to live with them.
"It's more of a squad game than ever these days, and there will be players in the squad who get frustrated.
"Take the example of Mike Pollitt – he was unfortunate to be left out when John Filan came back, but his attitude since in training has been
spot on.
"David Connolly is another who is unfortunate not to be starting at the moment, but he has continued to train hard and run like a good 'un."
Meanwhile, Latics have confirmed they won't be appealing against Lee McCulloch's sending-off on Saturday.
The straight red card from referee Phil Dowd, who deemed the Scotsman's
challenge on Emre as serious foul play, means a three-match ban, ruling him out of the games against Villa, Watford and Fulham.
Although McCulloch felt the dismissal may have been on the harsh side, he admitted it wasn't the best challenge in the world from him.
He said: "It was my own fault because it was a bad tackle, I just mis-timed it.
"I think it was harsh to get a straight red card – although it was a definite booking – but there's nothing I can do about it now.
"I didn't have my best game on Saturday and was perhaps a yard off the pace."
McCulloch suffered a slight injury to the ligaments in his left knee making the challenge on Emre, although he should be fit to train later in the week.
Latics have been allocated 1,100 tickets for the game at Portsmouth on November 5, which has a 5.15pm kick-off.
They went on sale to corporate and blue chip holders today, with season ticket holders getting their chance from tomorrow.
Supporters who can produce four away stubs get priority on October 26, with any other seats going on general sale the following day.
But the Senegal inter-national realised the error of his ways over the weekend and apologised to manager Paul Jewell and his team-mates before training yesterday.
Latics have now drawn a line under the incident without any further action being taken, and Camara is expected to keep his place for Saturday's visit to Aston Villa.
It hadn't been the best week for the striker leading up to the Newcastle game, with his chances of reaching the World Cup with Senegal dashed when Togo pipped them in qualification.
And he believes that disappointment was playing on his mind when he was hauled off with 13 minutes left.
Camara said: "It's the first time I've done something like this and it was a heat of the moment thing which I regret.
"I've apologised to the manager and my team-mates, and understand that no player is bigger than the club.
"I was tired after a bad week with Senegal and I think the disappointment of not getting to the World Cup hit me a lot more than I thought."
Jewell was pleased to get the apology, having accused the striker on Saturday of showing 'a little bit of disrespect' towards the other members of the squad.
And he says the incident is now forgotten, with all attention trained towards the trip to Villa and hopefully the extension of their six-game Premiership unbeaten run.
Jewell said: "It has all been sorted out now, I wasn't best pleased at what happened and Henri has realised he was wrong.
"I think it was just frustration on his part but people have to learn to show their frustration in a better fashion.
"I don't expect players to be happy when they're substituted, but sometimes you have to make decisions people don't like and they have to live with them.
"It's more of a squad game than ever these days, and there will be players in the squad who get frustrated.
"Take the example of Mike Pollitt – he was unfortunate to be left out when John Filan came back, but his attitude since in training has been
spot on.
"David Connolly is another who is unfortunate not to be starting at the moment, but he has continued to train hard and run like a good 'un."
Meanwhile, Latics have confirmed they won't be appealing against Lee McCulloch's sending-off on Saturday.
The straight red card from referee Phil Dowd, who deemed the Scotsman's
challenge on Emre as serious foul play, means a three-match ban, ruling him out of the games against Villa, Watford and Fulham.
Although McCulloch felt the dismissal may have been on the harsh side, he admitted it wasn't the best challenge in the world from him.
He said: "It was my own fault because it was a bad tackle, I just mis-timed it.
"I think it was harsh to get a straight red card – although it was a definite booking – but there's nothing I can do about it now.
"I didn't have my best game on Saturday and was perhaps a yard off the pace."
McCulloch suffered a slight injury to the ligaments in his left knee making the challenge on Emre, although he should be fit to train later in the week.
Latics have been allocated 1,100 tickets for the game at Portsmouth on November 5, which has a 5.15pm kick-off.
They went on sale to corporate and blue chip holders today, with season ticket holders getting their chance from tomorrow.
Supporters who can produce four away stubs get priority on October 26, with any other seats going on general sale the following day.