Soft body physics in an inverted environment (breasts continued)

Okay so we have solved the breasts issue in most cases, has anyone figured out how to get the dynamics correct in an inverted model? Such as an acrobat hanging upside down on a swing? I've taken to time stamping an additive animation to solve the problem, but certainly someone has figured out a physics solution.
I have no issues when the model is upright, things sway and move properly, but the moment she inverts the physics go out the window. Has anyone solved this issue? Thanks