The Jim Hardy ONE PLANE SWING has been around now for a couple of years. I have heard a couple of different twists on it, but most are similar.
This is my TGM translation--
Setup Posture is per 9-1-1 #2 --Bent over
Takwaway-- Very similar to 10-6-E, but the Right Elbow gets into the Feel of a Push type position, per 10-3-C. The Actual Plane Angle will probably be Elbow Plane.
Rotated Shoulder Turn
This is a SWING, because of the Spinning Body(shoulders).
Single Wrist Action
Right Shoulder Throw
Simultaneous Release with Right Elbow in Punch Position
Arc of Approach
Some people seem to really like this Swing. One of the benefits of TGM, is that you can break down nearly any kind of Swing(Stroke), and figure out what is going on.