There is one option to possibly consider...
If, and I do mean "if" Disney is to source of all this contract confusion, why don't they offer to make things right? I'm not saying they'd step up to making things right, but hey, you or your agent can always ask, right?
If you don't ask, the answer is always "no". But if you ask, the answer might turn out to be "yes".
If it was a glitch, why doesn't Disney replace the points expected in the contract yet now missing, before the contract closes. If this is a glitch, the seller is not a fault, the buyer is not at fault, the agency isn't at fault....but the buyer is left with a choice of either going forward with an purchase that isn't what they intended to buy, or, get their money back. (I"ll still hold onto my thinking that any agreement outside of the contract isn't holding to the spirit of the contract.)
But...
...if Disney were to make things right, because of a glitch, everyone would be happy. If this thing passed ROFR, the seller gets their money, the buyer gets their points, Disney gets their annual MF, the agency gets their cut, everyone wins. Disney would be the biggest winner since they'd do something to rectify a problem they made, along with the goodwill they'd provide. A happy customer comes back for more later....
...just thinking out loud.
(Nomex suit is on...)