Absolutely.
But put yourself in the mocassins of
that family. You fly all day to get to Disney, you get to the resort, and Disney tells you they have canceled your reservation because you rented from a commercial renter

on eBay.
What was
your crime? You didn't know the
DVC POS prohibits that?
Now...if
you were in that predicament, who would
you be mad at -- the person you rented from, or the company who told you your vacation had been tossed into the toilet because
THEY decided to do so?
That's a public relations nightmare. Geraldo (where IS he, BTW?), Greta, and Nancy Grace would be all over that. Larry King would interview some guy who used to be your ex-wife's cousin
for two hours live from WDW! Wolf's lips would quiver and Bill Riley would be apoplectic.
Naw. Ain't gonna happen.