That's unlikely to be happening here. The 3% (or so) they own pretty much covers maintenance. While they can sell it, it is most likely used for when rooms go out of service, or they close a floor to replace the carpet in the hall or refurbish rooms.
They also own all the points they've acquired through ROFR or foreclosure. Those are their points to do what they wish with them, and obviously they want to monetize them.
The greatest number of points CRO probably holds is those that have been used to book non-DVC vacations by members (except RCI, for RCI trades DVC deposits rooms with RCI). DVC must sell those for cash in order to cover the costs of member trades. Members cannot recoup those. Its probably best to think of these rooms as rooms members have already booked - they've just traded them for a room on the Disney Wonder.
The final group of points they have access to is any rooms not booked by members 60 days out. Those are the only rooms that could be reclaimed. The revenue for those rooms goes towards member dues as "breakage income." It feels to me like its becoming less common for breakage rooms to reach CRO.
I would be willing to bet that they all go into the same pool, and that they leave cash bookings open well on advance because they can make such a profit off of them. If they can switch in ROFR points or Disney cruise points in and replace them, great. If not, they still get hundreds of dollars for a room. That would also explain why you sometimes hear of people being moved to hotel suites when there is an issue with their room. They do not always leave 3% in reserve just in case it may be needed.
