Whether he decides to leave or not is on him but they are not getting rid of Jim, given the circumstances. Brown and Zordich are probably out, and it's ridiculous that it has gotten to this point in year 7 (6.5?) but they are going to have to scour the GT market for a QB once again unless McNamara shows something down the stretch.
I'll concede that I don't think it's going to happen with Jim at Michigan (and there's a strong possibility that says more about Michigan in 2020 that it does about him) but besides individual performances, I think anything positive taken away from this season on a team basis is fools gold, and we're going to see a lot of these "surprise" teams fall back to earth in 2021 if COVID is somewhat under control by then in the US. I'd rather make a change after an actual season with a decent sample size, than make a change after this truncated mess of a season.