Wrist and forearm combination compound swivel. Always read comments below for detailed explanation..

Exact movement required. Thought I'd give you a front and rear view for better comprehension. Really is this simple. club head moves approximately 6 feet throughout this move. The most difficult part of this move is getting there to start it. Do this as the 7 to 5, 8 to 4, and the 9 to 3 drill to ingrain. Practice inside to out path. Hold your back to the target with whatever back swing rotation that you generated in the downswing, releasing it only when your body tells you to. Kind of an arms only type drill. Getting there, that's coming soon to a theater near you.