Very similar situation just happened to us (one difference: our vacation that had to be canceled was scheduled for May--but I have a confirmed reservation and all plans made)...
We're not in our holding period, but I'd used both banked & borrowed points on this reservation, and so would have only until January 31, 2009 to use 73 of the points. Already have most of our Disney plans for the year made...there was a reasonable chance I could/would use those points in that time frame--but no "readily visible" time/way to use them.
So I decided to just look on the R/T board to see what was what...Within 3 days I had three people interested in the week-long reservation...I reached agreement with one person (who's totally thrilled--and man does that feel good to me!)...the transaction isn't yet done...I'm waiting for my renter's payment to arrive (she offered to overnight it, but that seemed to me to be an unnecessary expense, given our time frame, so it's coming by snail mail.)
For me it was totally stress-free...I knew I didn't "have to" rent...I could easily cancel and quite likely find a way to use those 73 "unflexible" points (and bank the others)...and I wasn't facing any time pressure, either...my renter seems pretty happy, too...of course, for me it's essentially "no risk"...I already have the reservation, and I'll make the name switch as soon as the payment clears...for my renter, she may not "know" how secure this transaction is--but I do. I know I won't do anything to cause her stress!
I've already given her the confirmation number, and of course will mail her the written confirmation when it arrives.
My terms were: $12/point, no cancellation (altho I'll make a call to MS if something goes wrong for my renters and they find an alternative person to use the reservation), payment by check, with me making the change in reservation names once the check clears. It's all in writing, including her agreement to be responsible for any damages to the villa for which
DVC would charge me. We've spoken by phone and by email, and established a feeling of trust with each other.
So, it would now appear I've had two completely opposite experiences--I got scammed in October 2006 (I'm the OP in the "Sad Story" thread that's linked in Webmaster Doc's "please please please" sticky at the top of the R/T board.) And this one so far is smooth-as-silk and resulting in two very happy families. (Well, how happy can we be given that we have to cancel a planned trip to WDW? But you know what I mean.)
So...I recommend perusing the R/T board for a few days to see if anything pops up that matches what you have and see if it can work as smoothly for you...if not, you can cancel (and deal w/holding points--but you'd have to do that even if you canceled today...so no "new risk" there)...
Good luck!