I really, seriously don't care. That said, yes, I'm pretty sure that he would have smiled, for whatever that's worth (not much). He was injured more severely than he was letting on, and he knew that that, above all, was why they were losing that game. A healthy Brady wins that game, and he knew it. So sure, he probably feels responsible, even though he absolutely shouldn't. That's why he'll continue to work harder than everyone else and continue to re-set the bar for the quarterback position in the process.