Why wouldn't he? If I were in Brett's position, I'd say it would have the opposite effect on me.
I'm sure his father would like to see him play the greatest game of his life. I suppose it could go either way, but he's a veteran in this game. Trip, stumble and fall... stay down? or get back up and use this situation as emotional fuel?
Maybe Brett is thinking "This one's for you dad."
We'll see.