It is situations like this that make me happy to have a few points to spare here and there. If possible, I would take those last two nights at VWL and hold on to the second-to-last (penultimate) night at BCV. Then keep the waitlist for that last BCV night open; I would do this even if I had to borrow a few (not a lot, but just a few) points from next year. If something comes thru before 30 days out, then great; otherwise at 31 days, cancel that penultimate night at BCV and live with the move, and save yourself from Holding Account points.
Moving in the middle of your stay isn't so bad, but we always prefer to stay in one place if possible. And if you do move, two nights at VWL in the pre-Xmas time will be gorgeous!
That being said, for our own Thanksgiving week trip, we are staying at BCV the weekend before thru Tuesday, then shifting over to our our usual BWV Std view for the rest of the week and following weekend. DD really wanted another stay at BCV after we stayed there last Oct (after being stranded for a few days due to a cancelled flight). But the point savings of the BWV Std view keep calling us back. So we're only dabbling in BCV this time.
Have a great trip! Apparently, we'll see you there.