I hadn't drawn that comparison.
Really, I understand any growing pains UF may be having defensively. Sure they recruit lights out every year, but they did lose a ton of starters and depth in one swoop. Experience is hard to replicate no matter how talented you are.
However, the offense is pretty sad. They did lose some talent there as well, including Tebow, but they've had a few years to prepare for the Brantley era, and they've known since Newton left that Brantley was going to be the guy, yet they still can't adapt their spread option offense for a drop back passing QB. Every time they run some form of option with Brantley, it makes them look clueless.
I'm trying to think about the actual football reasons why they are struggling, but you may be on to something with a coach leaving and coming back.