Really this was a historic choke, its going to be played 20 years from now on NFL shows. You can't really make any mistake about it, he completely cost his team a game with a really, really dumb mistake.
Granted, his play was a huge reason why they were there in the playoffs, but man I wouldnt be shocked if he's never the same.
He manned up and took responsibility for the game. Really you have to wonder what something like that does. Maybe he can get it together by training camp, have a good year, but if hes in a spot where he needs to make a play in a playoff game, does he choke again? Can he get over it?