He dug his own grave and bringing him back under any circumstances would be a PR night mare. Mac is the victim of bad luck as much as you don't want to say that in college basketball. Mac wasn't the one who brought down this program he inherited a bad team.
I think Farve answered all the critics by taking the Vikings to the conference championship game and still having a shot to go to the Superbowl late in the 4th quarter. I don't know how you argue with any one that can do that.