A lot of hand shock is the result of bow design, shooting arrows far too light. Regarding torque, I have had bows that required a rather firm grip, and bows that required a gentle touch.
I have found that finding the pivot point and directing my push to that point, toward the target, even though my hand is touching other areas, the torque is eliminated, and the shots are clean.
The Saxons I have owned required a more traditional heel of the hand grip, as did the Elburgs, and Great Northerns. It is totally different with my Black Widows, I just place my hand on the neck of the grip with my index, and thumb touching, and rotate my hand out at about a thirty degree angle. Everything lines up, and the bow shoots right down the middle.
I think bow design is most likely the most overlooked factor , when we look at torque issues. If I grip my Widows too lightly, I can get some real torque issues.