This makes sense to me. He went from Hero to Zero at the flip of a switch.
Cool story time: I live in NC and I met a dude a few months ago who played football at Wake Forest, and then was in the NFL for a little while as a kick/punt returner. (can't remember his name, it's pissing me off.) Anyway, he said, and I swear I'm not making this up, he never got spooked by big hits until he he got laid out once by London Fletcher. It was like nothing he'd ever felt before, and it was at that moment he decided he didn't want to play in the NFL anymore. He was a borderline player anyway, so it's not like he had a big career ahead of him. So he said "f this, I'm done," and got into the business world.