The coaching life span at one place has dropped to about 10 years in cfb. You dont have coaches staying in one place for 25-30 years like they did in the 50's or 60's or 70's.
Paterno and B. Bowden are throwbacks to days long gone. Even Spike Dykes former coach at Texas Tech said coaches lose 10% of their support each year.
By that measure Fulmer should've been gone after he got blowed out by Maryland in the Peach Bowl over 5 years ago.