I don't believe Helton is running a smear campaign against UT. Fulmer helped Helton and his family into a good situation and made it a smooth transition, and I think there's mutual respect there. But the UT OC job isn't easy and the reality of the situation is going to weed out guys who can't thrive in that type of intense environment. And that's a good thing. Another unhappy OC would be a bad thing.
Ironically, it seems that Pruitt is now changing up the offense to what Helton wanted it to be all along.