If you're referring to December 2004, the best chance you probably have is to find someone with an existing ressie. The first two weeks of December go really quickly because of the low point values required and the fact that the parks/resorts are decorated for the holidays.
Pretty much the same way you looked for points, only BWV owners have the booking window priority, so they would probably be the best bet. It's possible some have booked on the chance they'd go at that time and may be willing to rent the ressie. You'll just have to ask. Your other option, aside from the other DVC, would be to consider SSR, as that inventory is continuing to come online as it is sold, and there is a chance that some with home resort ressies may try to flip into SSR and subsequently open up the already existing DVC to additional availability.