Unfortunately, I do not think that escrow companies will handle the money, at least a friend of mine who is renting has told me that. She said she's contacted several of them and they don't do that. (She's renting from someone on the TUG site which again I believe is also reputable like the DIS here).
Also, unfortunately, the member *can* rent you the points, take the money and yes indeed cancel the reservation and keep the money and the points - but I really think that would lead to legal consequences **if** you had some sort of a contract signed. Which is what my next thought would be, I wouldn't fire money off and have just a "confirm sheet" in my hand without having some sort of binding legal contract. I believe there's sites all over the internet to print those out. I.e., a simple "renters agreement" for instance.
What has really gotten my attention is the fact that when I was looking into this, I had called Member Services and was told that even though the ressie could be in the *renters* name, and you could call and inquire about it, and make your requests etc., etc., -
DVC has NO liability to tell you ANYTHING about the reservation (ie that it's been cancelled or altered or what have you) since you are NOT the member. Honestly, that sort of scared me .....
BUT -- the GOOD thing is that this is DISNEY! And we automatically tend to trust people that are DVC Members as their not like some average joe just coming along and renting you an oceanfront condo in Arizona!!!
It makes me feel good that no problems have been reported, let's just hope it stays that way!! And more people should be posting when and who they've rented from to build sort of "public" references on these boards! (Even though the search feature seems to be not functioning STILL).