This seemed like one of those hits that gets flagged whether it was legal or not, simply because of how hard it was. Of course we all knew this was a feature to D.J. Swearinger's game, and it's fun to see. I'm curious to look over the game again to see if his coverage skills have improved at all.
He did give up a long completion for a first down after J.J. Watt's sack, if I remember correctly.