[Daryl]

Daryl,
Here is a Mickelson photo, he uses the TSP, is he below plane looking at your pic and at pic 5 numbered?

It appears that he's on the TSP but has leveled out his down plane shoulder a bit early (maybe). Pics 4,5, and 6 show that the on plane shoulder has moved off plane after release.

He's obviously not on an Elbow Plane. I haven't ever looked at his swing before, but his leading arm is not dropping straight downward like it would with a Plane Shift to the Elbow Plane.

Thank you for posting this great sequence picture. He's a Hands Controlled Pivot TSP Swinger. I never knew that. His right elbow never stops moving down plane and his leading arm is blasting off the chest from frame 3 to frame 4.