Michigan's grievance was the sudden unappealable, no due process punishment based on ill-informed and emotional info op by its rivals when they were guilty of acts just as unpardonable. If the future B1G does not include a fix to that, leave and leave soon. Unless they judge that its cold out there and the appetite for Michigan football is not an extra 4 million eyeballs a game no matter who the opponent.
But the B1G could apologize.