[Golfie McG]

Don't like the upward movement immediately after impact through the follow-through. Probably a little throwaway. If you were to work on his game today- that's the area that sticks out in my mind and where I would concentrate on, at least on this clip. Could have been just this swing or that week that he was swinging that way, maybe wasn't swining it his best or could have just been his basic movement that he dealt with.
Mike O.

Mike,

Change this swing? I think there are two factors that should be considered before that.

I think that he’s just going for the smallest pulley possible. Stretching the left side. Shortening the radius.

Second IMO the differential in clubhead speed, pre-impact and post-impact, causes a near instantaneous change in the effective weight pulling on the left shoulder. Pre – impact the shoulder muscles are resisting a force (ever so briefly) in excess of 100lbs. After impact the dynamic weight of the much slower club is significantly less and the muscles pull the shoulder up and back.

Golfie