Maybe he isn't an absolute freaking moron. If we went to a 3-4 with our defensive line we would give up approximately 350 rushing yards per game.
With our personnel exactly like it is right now, then yes, it would be a mistake, but next year, if key people put on some pounds, it could work. It begins with Bolden getting stronger and significantly bigger, or we would have to land a huge run-stopping DT in this class. You need a big DT, and big DEs.
Turk would be a perfect DE for the 34, but he's gone, so you move Mapu and Fisher back to DE where they started in high school, but they keep the weight and keep getting stronger. Fisher would be your rush end, since he's better at rushing the passer. Then you move Ayers back to LB, and there's your Willie McGinest/Joey Porter-type pass rushing LB. McCoy and Mayo put on a few pounds and play the middle to stop the run, while Chris Donald (assuming he signs with UT, and puts on a few pounds as well) plays the weakside. Karl gets left out, because he's too small.
This would also give Chavis many more options to blitz. Think about how much trouble Peyton has had with the 3-4. Now imagine the problems college QBs would have with it.
A few key players would have to beef up to make it work, but the players will be there, in my opinion. It's all dependant on the DT, cause if he can't hold his ground against the run, the whole defense fails.
Do any college teams actually run a 3-4? I know Alabama played a little this year, but they didn't go full-scale 3-4.