If he claims to win and he loses he's basically fucked himself out of a political future. That would be monumentally stupid.

I understand that his chances are low regardless, but they're non-existent if he can't build a media narrative off of actually winning Iowa. That's been his plan from the start, and why he's sunk so much money into winning the state. It makes absolutely 0 sense to me that anyone thinks he would want to sabotage the caucus.