This better explains what I'm trying to say. The Left Wrist is Level and Flat at Impact for Both Procedures.
TGM's Turned Shoulder Plane requires a Release Swivel for the Left Wrist to return to vertical for Impact if the Sweetspot was swiveled to Plane at Start-up. We have ultimate control of the Clubshaft on a Turned Shoulder Plane with the Flat Left Wrist and full use of the #2 and 3 Accumulators. The Right Hand controls the Clubhead on every swing plane but it won't do it at the expense of the Left Arm Wedge when on the Turned Shoulder Plane.
The Elbow Plane needs the "Hogan Swivel" to change from a Bent Left Wrist to a Flat Left Wrist for Impact. I don't consider it a True Sequenced Release because all it does is spin the shaft around it's axis. It's like a Ball and Socket Swivel and can accommodate any plane angle with a lost Left Arm Wedge.
The Hogan Swivel needs to be Stopped to prevent over swiveling at or before Impact otherwise timing needs to be perfect. I think that this can be done in two ways. First, slam the wrist into an arched position after Uncocking so that the Left Wrist can be held vertical for Impact. Second, use pivot force to overcome the swivel as the left wrist becomes vertical. Arching doesn't need such a driving pivot and my experiments show that it doesn't have the timing issues either. Also, the driving pivot method, which is being talked about (force will create alignments), doesn't lend much confidence when face with a delicate 30 yard pitch shot.
If you Bend (Cup) the Left Wrist even only slightly, it is Bent and will require the Hogan Type swivel to prevent bending the Delivery Line.
Hogan Swivel
Absolutely. The amount of work Daryl has put into this is staggering. But the TSP is a StartDown Plane of Motion. Impact is ideally along the Shaft Plane Angle, the clubs lie angle, which will also be considered an Elbow Plane if the Elbow is also on that same Plane Angle. A very good thing that most truly great golfers achieve at Impact and Homer reasoned the perfect alignment around which to adjust our machines at Fix. This alignment, this RFFW on the shaft plane at address is perhaps the only tell tail sign of a TGM adherent. That and some totally bizarre golf terminology.
Plane Shifts do happen, for longer swings anyways, but the straight line Base Line stays put. So keep tracing my friends. 1-L-18
The plane angle you release along is a function of what plane angle shifts you are employing and at what point you release. Its a flat plane yes, like a sheet of glass, that shifts its angle up and down with the base line staying in place.
Now if you point the entire flat plane, sheet of glass, left or right of the original target and trace the new straight base line associated with this new plane of motion , then you are said to have "bent the plane" or its base line to the left or the right. This new Delivery Path of the clubhead when combined with variations in clubface angles will produce curved shots for instance. You bend the plane to the right to hit a draw say. Meaning your sheet of glass is pointing right and your clubface is pointed left of that to some degree. The geometry stays the same, you still trace the base line, the plane angle changes etc.