Thanks, Michael - great viewing for an insomniac when I first saw this at 3 am - From site and placing my fingers on the screen, it looks as if Donald moves his hips and head about an inch or so (more or less) to the right; his weight moves onto the right foot and then he recovers all of it as he moves slightly left at the top of the swing.
Great analysis.
Can you do another video focusing on the downswing? Legs, Hips, Shoulders, Ches, and Arms (or some of the preceding). Thanks.