[6bmike]

I think the greatest benefit of Stack and Tilt (Andy Plummer and Mike Bennett) is its emphasis on the centered and stationary head. When you keep your head steady -- no Swaying (Fourth Snare / 3-F-7-D) -- good things happen.

Yes, a stationary head from solid anchors and flexable spine angle. It also has solid extensor action from take-away to follow through. Which 'forces' or demands the golfer to stop his back stroke at the end and not the top. This eleminates for the general public the vanity of the long back swing with folding elbows.
I'm no expert but I enjoy the feel of my spine adjusting and re-adjusting naturally on the back swing. I never thought swaying over the right leg, even a little, as in General instruction, was the way to pivot.

It really isn't counter to TGM- just a slightly different constructed machine.