The site that sells reservations, Dis Dining Agent, has this on their page:
9/24 Update - We are aware of similar sites being asked to halt or alter their services by Disney. At this time, DDA has received no contact from Disney. Should we hear from them at any time, we will happily oblige any request they make and we will keep you updated should any developments happen.
This is the one, IMHO, that should have been first on Disney's list.