From @fentoozlr24: It feels like the Michigan–Jim Harbaugh honeymoon phase is way over. How hot is Harbaugh’s seat at UM this year and does his job security potentially hinge on Shea Patterson’s eligibility? Going 0–3 against Ohio State/Penn State/Michigan State again seems like it would be a pink slip waiting to happen.
It definitely feels like the honeymoon phase is over, but even if the doomsday scenario you described happens, I can’t see Michigan firing Harbaugh at the end of year four. If things are going badly, I could see him heading back to the NFL, but I can’t imagine the school pushing him out the door barring anything exceptionally weird.