I translated the ruling, but it was difficult to understand the context of certain paragraphs. It does appear, as OP states, that the court ruled against the TS owners and assessed court costs against them.
That said, the sending of maintenance fee bills and other behavior indicates to me that Alegria needs a good percentage of the TS owners to sign up. It is part of their business plan. I would think that if you like the resort, and didn't sign the letter yet, you probably still have some leverage with Alegria. A week at a nice resort for payment of the MF is a pretty good deal, no matter how hard it is to swallow the loss of the equity investment. I have a TS in Myrtle Beach I wish I could get rid of...