OK so you don't see it and others do. Depends on the film clip you view and when it was taken. Here's a link to some discussion on the book by some folks more knowledgeable on Hogan than you or I. http://www.golfwrx.com/forums/topic/122814-vj-trolios-book-the-final-missing-piece-of-ben-hogans-secret-puzzle/page__hl__trolio
Seems the speculation occurs on how much weight was on the lead leg after the move.
It took me about a year and one half to smoothly encororate the move but well worth the effort. In some ways like the Stack and Tilt instruction without the Tilt.
There are a couple of other threads discussing the "early return of the hips" I'll try and find them.
P.S. -- I don't know why the link will not highlight for clicking.