Movement Within your Cylinder - The Yoga Paradox

[Pantherdreams]

Try to make this as simple as possible from a positioning stand point. May just be overcomplicating and confusing myself but got into a discussion with a couple of other guys the other night.

Where the defenders feet are mark their space on the floor and their cylinder exists between and above that space. (Acknowledging limitations. Can't be extra wide or have 1 foot way out in front or behind.)

Within that space is movement of your trunk or torso able to negate your LGP or space?

A)
Example: The space between and over A1's feet is their space. But when in a defensive stance their butt and hips are at the back end and beyond their feet while the top of their torso is out above their feet. If they straighten up their knees to get taller as contact/shot is imminent their hips are moving toward the front of their cylinder as is thier stomach while their shoulder are moving up and back in the cylinder. IME I would not consider this moving foward into the offensive player if contact occurs.

B) Example: The defender keeps their feet squared but turns at the waist turning their shoulder into the path instead of the chest and contacting the dribbler/shooter. Shoulder is still between feet and in cylinder. Are we making the O or D repsonsible for the contact?

C) Example: Defender is guarding dribbler. Defender is low active and in LGP. Offense is perpendicular to defense shoulder aligned to defenders chest, but no contact. Minimal space between defense and offense but no contact. If defense thrusts hips forward (clearly not able phyiscally to get hips past front of his own feet though) in his cylinder and the movement creates a bump with the offensive player whose that disrupts the dribblers timing, freedom etc. Do we have D responsible for that contact?

In a nutshell the defenders torso, hips, shoulders etc. Moving up, down, back or foward, or around within their space ever make them responsible for contact.