I agree that he shouldn't have gone after him after the late hit out of bounds. But Britt was a POS all game. Not sure "chippy" as Theiry puts it is adequate. Like Donald said, I hope the league also sees this. So based on the way Britt played and then the late hit that was obviously a POS move... I can understand why Donald had had enough. I don't agree with it but I can understand how someone could lose their temper. To some degree I would be more surprised if he didn't.
But like Donald said, he has to be better. Tough thing to do IMO but if he can do it then awesome.
The thing after the game... i don't know what happened but you can't do that. Again, I don't necessarily disagree with it on one hand and further I don't really know what happened. But that Donald put himself in that situation is a dumb move. Even if his intentions were to go over and say "I don't appreciate the way you acted throughout the game" he knew it was not the right thing to do. He wouldn't have put his helmet on if he was certain that Britt wouldn't initiate contact... which it appears he did.
The worst thing about this is that it opens the door for other players to try to get Donald to lose his cool. How far would they go?