Unprecedented situation. The entire team could have transferred but didn’t and O’Brien deserves some credit for that. I can’t think of many that would have done much better in those circumstances but it could have easily been much much worse. Jim harbaugh has done marginally better with no such hinderances. Pat Narduzzi much much worse.
And FSU and Nebraska are 2 that others that come quickly to mind as just being flat out awful for really no good reason.