You may want to look more closely at that one.
Not his best game for sure.
But he was pretty much playing with Iowa State's team that day (I mean, that team was totally depleted on both sides of the ball) at a red-hot division rival's home field, with busted ribs, no blocking, no run game at all, no game plan, no nothing.
He does not get a pass, but the situation was about as impossible as anyone could dream up...especially near the end with all that plus all of his WRs gone. I'm sure he thought he had to carry the team, again.
Bad game though, yes.