We may not come to any sort of agreement here, because I came away with a very different impression when watching tape.
He plays high at OT, that's how he compensates for having poor footwork, he stays high so he can recover quickly. His kick out is usually not correct or very deep at all, every once in a while he'll have a good one, but I'm sure you can see any OT get a good kick out every now and then. Usually its shallow and after the initial kick out he moves towards the defender - it's no wonder why he has so much trouble with quick guys. Honestly, watch him versus Barnett and he was struggling to recover all game, and Barnett isn't even a very athletic guy. That should tell you all you need to know about his footwork, it's very poor most of the time and sometimes it's barely adequate. He's toast against guys that can bend the edge.
He'd be so much better served getting moved to guard. He can be an ok RT, but he's much better suited for inside work where his strength can be best utilized and his footwork issues alleviated to an extent.