[O.B.Left]

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.

I must admit to being confused. When you say "down" , "in its original grip position" are you referring to a Pause Minor Basic Stroke type deal. Scooting (another S word) the club head ahead of the Hands intentionally but without a breaking left wrist ......which'd be Throwaway? Horizontal Hinge and Pause , like the photo in the book?

The Pause would present the bounce of the sand iron rather than send the front edge of the blade into the sand like a knife. Especially if the Grip or face is Rotated open.