I still think this is something started by a random poster in the sleaze thread at DVDVR, which someone who follows the Internet within the company probably read, and it spread from there. I don't think there's anything to this, except that in the absence of an explanation, people are searching for one. This rumor never would have seen the light of day if not for the sleaze thread. It's the only source for it, which leads me to believe it has no credibility.
To clarify, that works both ways: not only as something that probably didn't happen, but probably even something Vince hasn't thought of. I can't see someone reading that at DVDVR, then going to Vince and saying, "So is it true that Savage tried to screw your daughter?"
If someone in the DVDVR thread had said something totally different, like that Vince didn't want to work with Savage because he screwed Linda, it would have spread the same way.
Something very well may have happened to give Vince legitimate reason not to want to work with Savage, but there is zero proof that it's this.