ok.. sort of off topic.. (but at least not about genitals!)

Is it possible to distribute an alteration to a figure that would change its joint centers, either just moving them or adding a dependancy to certain joint rotations, without requiring the re-distribution of anything proprietary?

Ie say I liked Joe publics fix to the thigh joint center and wanted to distribute it as a third party 'fix'

 

*disclaimer: I have no intention of jacking Joes work and calling it my own.. just an example