Originally Posted by mvmac
First off I might argue that S&T is least constrained because you allowing the hips to turn and rear knee to release some flexion. Compared to other instructors that want you to maintain address knee flexion throughout the back swing, to me that would be the most constrained.
Back to the Snead. Yes increased pressure in the right foot on the backswing, but not much sway here.
Here is the video so you know I'm not trying to cheat :) Please take a look at what he does and not what he FEELS
And Jack keeping the head steady
I think a lot of people have trouble understanding the difference between weight shift and sway. You can (and most beginners do) shift the weight to the right foot by swaying to your right. Or you can shift weight to the right foot without swaying, by rotating in the backswing and countering, and then reversing this rotation using the right foot. Every golf swing includes this transfer of forces. Lastly, you can shift weight to the right foot without swaying or rotating, just by easing the pressure on the left foot (in some cases lifting the heel). Now, if that's how you shift weight to your right foot, you won't be in balance, and your body will start to move to your left. But of course, this is exactly what happens in a golf swing.
So it can be confusing to look at the top of Snead's backswing, and look at his left foot, and clearly see there's no weight on it. But you can see, by circling his head and drawing a line from his right foot to his right hip, that he hasn't swayed really at all. He's "stayed left", and in the downswing he goes further left.