There should be a difference between the calls you make when it's just a game.... and the way you play a win and go superbowl-lose and go home game.
That go for it on fourth, don't take the kick, loss to the cowboys should have taught him something.
The first 4th down attempt I agree with, the second time, a field goal was warranted. But like I said, if the Lions actually had a first down in the 3rd quarter, or played half as good as they did in the first half, that field goal wouldn't have mattered.