I know that last year Joe Gibbs threw out a challenge flag when the opposing team had twelve men on the field and the other team was penalized. So, penalties can be reviewed. I don't know if delay of game (or lack of) calls can be reviewed, though.
He is so gone. 1. He wants out and is tired of being the scapegoat for all that goes wrong in Minnyland. 2. He has worn out his welcome in Minnyland 3. He knows there is no way this team ever gets to the Super Bowl as is.