I like 2-M-4. To me it speaks of "how to pull". Dont pull with the Left Arm for Total Motion. It'll pull off the body....triggering Release. Chip Basic is a different story, with the Pivot zero'd you can , if you so choose, employ a 10-3-D Left Arm Pull. You need to pre position your Right Shoulder so you dont run out of right arm.
In Total Motion the left arm is inert , stretched out by EA at the #1 , a "non accelerating" Thrust. The turning Pivot , the On Plane dive of the Right Shoulder in Startdown turns the Left Shoulder which pulls the left arm. For me the pull feels like a tug at the #2pp with the Left Hand turned to Plane. The #4pp is snug.
Sorta sounds like a Startdown Waggle doesnt it? You have to be on your left side.