During the Golf Stroke, the Clubhead orbits in an approximate circle. Assuming a Flat Left Wrist, the Down Plane orbit reaches its lowest point opposite the Left Shoulder.
Prior to reaching that Low Point, the Clubhead moves Down and Out (to the right). After the Low Point, the Clubhead moves Up and In (to the left). It is, after all, moving in a circle on an Inclined Plane.
Try it for yourself on a Horizontal Plane and see how really simple this 'pointing at a baseline' stuff really is. Through Impact, the Orbiting Clubhead only points at the Straight Line Baseline of its horizontal Plane of Motion. It therefore approaches Low Point from neither above nor below the Low Point Plane Line.
Through Impact, the Golfer best effects that On Plane Motion by Tracing the Baseline with the Right Forearm and #3 Pressure Point, not by "swinging left" with an Off Plane Right Shoulder and 'high' Right Forearm.
Even Hardy was asked why TOUR players 'X' and 'Y' made such obvious Off Plane motions during their Practice Strokes. Said he (paraphrased) in his newest book:
Threaded Mode
