Jp is on his 3rd coach. It's been more than just one game.
What more do you want JP to do? Fans were restless with Mac, so he hired one of the best coordinators in CFB, national assistant coach of the year that led a national championship defense and had ties to talent-rich areas. Then he gave that coach everything he wanted to help him be successful. But didn't work.
Hired promising assistant with ISU ties. Firey guy who the players would love. That staff had a young up-and-comer, genius OC and sage veteran DC. JP gave him all he could to help him win - indoor practice facility, football-only building, updated stadium.
When it was clear it wasn't going to work, he hired one of the best young coaches in CFB, a guy who was going to be a candidate for a few jobs. Then he basically had given that staff everything he can to help them get it turned around.
Again, what else do you want from JP? What AD has done it better?