From what you say it appears the hip movement would carrying the hands into the swivel, where the hands would then release into the hinge thru impact. Would that be correct?
Looking at some Freddie Couples videos it appears he could be a possible pressure point #2 swinger, and the best as many people would say. Of course I have no idea for sure, but he does have the look.
I'm a little concerned about as you say, opening the can of worms. Would you be referring to a pressure point #2 swing in particular or now that I have become aware of TGM ideas there are many possible ways to go to learning a new swing