He uses the turning shoulder plane for roughly his entire swing. Some say he sets up on it, and some say he sets on a different hand plane.
Either way, he's pretty much a no-shift swinger.
Have you seen the "Never Hook Again" video?
Basically since you are going "up the wall, down the wall" when you have to go "down the wall" his hands are so high above his head he has to allow for his arms to DROP (literally) otherwise his shoulder will be thrown off plane and the big pull comes.
So the hands are dropping (dramatically) while the shoulder begins to move as well, so it has the look of a small OTT move.