[Yoda]

Well Sir, that looks like a Finish Swivel of the Flat Left Wrist back onto the Inclined Plane to my eye.

I can admit to not doing that when in the sand.

Thanks for this
Ob

PS What about Hinge Action? Does he employ Horizontal (albeit with a rotated grip/face) for all shots? What about a little Vertical Hinge cut shot for a short sand shot?

I see a left palm remaining 'down' into the Finish, i.e., left hand remaining in its original grip position as the right hand passes.