I don’t need the line to completely untangle. This character model is actually temporary, when he is in a “crushed” state, and he uses his arm to claw the floor to help him move.
The blue point should be the only normal anchor point that freely rotates. The purple points would be where some degree of bending is allowed. The rest would just stretch along with everything. The hand however, should not stretch, while still remaining attached to the arm end (this is a problem I ran into using puppet pin, as right now the arm and hand are one shape so everything just stretches along one axis, undesirable; having the hand as a separate object avoids that problem, but then the hand doesn’t remain attached to the end).
I could turn the purple points into simply more blue points (which I mentioned before is a last resort) but that kind of solution would give me an animation that looks too stiff.
Thank you John!