I see the radial deviation that you're talking about. I try not to do that. Initially, I had difficulty getting the right amount of twist in the bar to have an efficient "unloading" process. I've gotten better at it--not sure how much it matters.
My exercise is definitely targeting the right area as it is sore in these first few days. I am optimistic that this is part of the rebuilding process for the muscle/tendons. I've had a moderate, but recurring, case of TE over the last several months. Really hard to get over it.