I have not heard of this. Do you happen to have the two budgets showing this difference and/or some other documentation showing the increase was caused by the removal of a subsidy (and not higher insurance and/or operating costs)?
Also, do you know how many current board members are owners that are not affiliated with the developer or Marriott? I assume with many people not voting, and with the developer still owning 17-20% of the inventory as you reported, the owners may be outnumbered in these decisions, as clearly, not charging the developer for maintenance fees on unsold inventory does not seem to be in the best interest of the rest of the owners. Maybe this is where the focus needs to be (getting voters to vote).