I have no idea how smart( or not) Driskel is, but I never figured it was his intelligence. He always seemed to me to have tunnel vision. When the situation heated up, he got deer in the headlights syndrome.
I can understand at one level why he may leave...to be ensured to get PT. But on the flip side, what is the point in going to some ****ty lower level competition school, even if he tears it up? Is he thinking he is still NFL material, and that is going to be the path to get him there? I could see him going somewhere that runs a more run oriented spread option - perhaps that would work better for him.