Cook looks like he let that first carry fumble really get to him and his confidence seems really shot as a result. He needs to know the coaching staff can trust him even if he makes a mistake. Benching him immediately after that fumble was a poor coaching move. Look at what Josh does if a receiver drops a ball. He doesn't ice them out, he goes right back to them and when they make the catch, he runs right over and pumps the dude up.