I can't remember if my contract have that, but still, since I have received my funds its more difficult to get some of them back, should I have used any points belonging to the buyer. Say points had been used, and now the buyer dont want to own that contract any more - then what?
Here in the US, these timeshares are treated like regular real estate transactions. Once both the seller(s) and buyer(s) turns in their paperwork, and money sent to the title company, the title company closes the transaction and sends for recording, the "deal" is done, the buyer is the new owner of the "real estate" or timeshare in this case, and title company releases funds to seller, usually immediately, sometimes with slight delays of some days. The title company does not get involved if seller fail to hand over the keys to the house to buyer, or if seller refuses to vacate the house seller just sold to buyer (I.E, buy needs more time, say 2-3 day to continue moving out). This than becomes a civil issue between seller and buyer to settle if not specified in the contract ahead of them. Some contracts will specify penalties (or lease by the day charge to seller) for failure of seller to move out the day of closing. So, when the transaction is closed and recorded, the buyer is the legal owner of the timeshare, whether or not DVC updated the paperwork to reflect the new buyer from seller. Meaning, you as the seller don't have legal right to do whatever you want to the "real estate" even if DVC thinks you the seller is the current owner. Real Estate laws follows the recording in the county office, not the owner of record that DVC maintain. Of course, this means nothing to the buyer until DVC updates the ownership to the new buyer.
So yes, seller can mess things up by using points they no longer legally own once the transaction closes and is recorded. In this case, buyer can no longer change their mind, the deal is already done. If buyer wants to change their mind, they have to sell the "real estate" they now already legal own by the fact that they sent in the closing paperwork, payment sent in, and funds distributed to seller, transaction closed, and recorded.
So while problems can arise after closings, like seller holdover from vacating the building (or using points they no longer own in this case of DVC timeshare), thankfully it's rare as seller understands their legal obligation once the seller sent in closing documents, receive funds disbursement, after transaction closed and recorded by title company.
Hope that make more sense.
Great3
ETA to Add: If the buyer refuses to have DVC update ownership to themselves after transaction closing, they are shooting themselves in the foot, in that they are still the legal owner of the timeshare as of the recording, money already long gone and disbursed to seller, and the seller continues to enjoy usage of the "real estate" from the buyer, meaning the buyer gets nothing. Of course, no buyer in their right mind would do this, change their mind after transaction closing and funds gone. The time to change your mind as buyer is before closing and endure whatever penalty the contract calls for failure to close transaction.