There have been reports of members being able to excercise a one-time banking option that would otherwise not be allowed. It has arisen when someone mistakenly misses his banking date or because a member has been unable to use points as planned because of a personal issue. Your situation does not appear to be one where it would apply as I have never heard it applied to already borrowed points (that would not even be "banking" which applies only to one use year's points being banked into the next use year) and the situation exists simply because you are buying an existing contract which Disney would look at as your voluntarily assuming a known situation.