My Explanation of Todd's Assertion

Todd said that the spine returns to its adress position (only lower) in Moe's swing at impact after advancing forward somewhat during the backswing and downswing. He said that the proper hip rotation by time of impact is the reason the spine returns to its address position at impact. That's why I asked for an impact frame.

If Todd is correct, and I think he is, what shifts targetward are Moe's knees, his right hip, and his front torso (belly and environs). Being two dimensional, videos or photos emphasize this lateral movement quite well. But what is obscured is the fact that Moe isn't two dimensional. He also has a thickness or depth which the flat 2-D image conceals. Moe's spine is buried in the unseen 3rd dimension of depth. When Moe turns away in the backswing his spine moves toward the target, and when he rotates to impact on the downswing his spine returns to address position (or very nearly so). Maybe I haven't explained it very well, but if you think about the depicted frames in three dimensions you can grasp what Todd has described. When you look at Moe at impact his tail lower spine is nearly visible on the far trail side of his body, having rotated back to its original position (or at least very close to it).

Tom