Where are guys coming up with Tomasello teaching a closed hip motion at impact, that's misguided interpretation...the hips respond naturally to the motion of the right forearm (The Magic of the Right Forearm).
DG
That's "drift" from the original point - Tomasello's first 'letter video' has instruction for the trail elbow leading the hip turn and he wants the hip turn delayed until the trail elbow passes the hips. He does not advocate closed hips at impact.