To be honest the comment doesn't really surprise me.
If you watched the game and saw the way he was reacting on the sideline everytime the defense forced a three and out, you could see how frustrated he was getting. Early on everytime he went to the sideline you could see him complaining to someone about how "they" must have done something wrong that caused the defensive stop. Later in the game he just had his head down.
I am certainly glad that even when things were not going well during the season, the leaders on the Iowa team always seemed to have their head up and were looking for a way to get things done. Appeared to me he was looking for someone else to blame???