There was a glitch in their online booking system. Several people were able to book stays. Disney than changed "Paid in Full" ressies to show a balance due so a lot of people cancelled.
It was a glitch in their system which they chose not to honor. There was a lot of controversy about this on these boards last year. Booking glitches happen all of the time. I remember a few years back when the Holiday Inn in DTD had a booking glitch on their site and you could book rooms for $.19
Holiday Inn honored those rates. Of course, the hotel was not repaired since the 2004 hurricanes, so they put people in other hotels. But they did honor the rates.
Anyway, I for one, am glad Disney honored at least 1 night of my stay. As you can see in my siggie, we go down there quite a lot and this just renews my faith in Disney. I prefer to think of it as part of their YOAMD promotion and I got a terrific rate on a suite and free tickets!!