Admittedly I haven't read the fine print, but seems to me that paying a special assessment, or even annual dues, is discretionary. You have the option of paying; selling; or walking away from the whole thing. All the timeshares I'm familiar with report a certain percentage of owners who fail to pay annual dues; requiring the management to "foreclose" to recoup. Which leads me to believe that walking away without further liability is an option. That's drastic, but in some cases it could be the best alternative.