More than likely, the former owner was trying to put the best face on a foreclosure. I'm glad they were ethical and notified you and refunded your money.
Just FYI for anyone who's reading this, situations like this can be prevented by doing a little research.
If you get the owner's true name (and you should not rent from someone who won't give you their true name!), you can research their ownership through the Orange County Comptroller's office website -- provided they own at one of the WDW resorts. If you do it right, a search there will tell you everything that's ever happened with their DVC ownership.
If you see liens, don't rent from them! If there's a lien, it's usually because they haven't paid their dues and that could cause your ressie to be canceled.
If you see a foreclosure action being filed, don't rent from them. If they "deed the property back to DVC," (meaning the court took it from them

), you will lose your ressie...and in most cases, your money as well.
If they say they own one of the WDW resorts and you can't find them listed, don't rent from them unless you can get the correct ownership info and
verify it.
If they tell you they are authorized to rent from someone else's account, don't rent from them. Period.
This is not rocket science, folks!