He can't handle the expectations in NCAA football, so he moves UP to NFL football? That makes absolutely NO sense.
I've been pondering this for a bit after reading your post and I have come to the following conclusion: D-I college football carries a greater burden of expectation for the coaches than NFL football.
Here is why:
In D-I college ball, one loss puts you in danger of irrelevance. Two losses, until recently, meant that your goose was cooked and you'd have no prayer of sniffing the title game. Three losses and you're out.
Contrast that with the NFL:
Eight (8) losses means that you can still make the playoffs and vie for the championship. Undefeated seasons are so rare that the last team to do it still meets to pop champagne in celebration of their feat.
I'm not saying that the pro game is less cut-throat or that the NFL GMs aren't holding their coaches' feet to the fire to encourage performance, but from a sheer W/L expectations analysis the NFL is the easier of the two gigs.