Yes, that's my suspicion as well for a lot of this availability. I do think some of it was related to the cancellations made before the planned downtime, but that does not explain all of it.
As with most things Wyndham IT related, they've made quite a cluster f*** of it. I don't know how you decide it's a good idea bringing the system back up if all of the data has not been migrated.
You could be right. That being said, from what I can tell the major renters at GC haven't had their "inventory" changed. I received an email today from one who advertises she has 5-6 reservations per time period (i.e. 6 2BR's 6/9-6/11). Is it possible those extra reservations of hers have been cancelled? What was interesting is she even mentions this change in her email and that she will have to charge more because she won't be able to cancel/rebook. I'm not sure the average person on her list will understand that.
I'll let you know if the two reservations I made today get cancelled..