[vj]

Athletic Jack did in fact putt this way. Jack's left hand was rolled to a very open face condition and his right hand was turned to a very open face condition. He definitely used more of his right arm than right shoulder. A small variation from the basic arm only stroke, but all in all very close.

I don't know if it is a "controlling" type motion or not. I would say it is a very good motion for fast greens. Adding a little bending to the right wrist isn't a bad motion for slower greens.