Lots of scenarios if the state is told negotiations must be open to the public.
I believe that under Boldt and subsequent decisions, the tribes cannot walk away. They could show up and not negotiate in good faith but that would be open to the public. A simple refusal to negotiate should put them in contempt and force the courts to address the issue. Of course, that would require the state to have to sue or simply close seasons and not do any thing like they threatened to do in the past. Hopefully the state would put forth their objections or the Tribes will weigh in with their objections, and the current court can give their opinion to the issue of the tribes sovereignty, giving direction to the parties and any future courts that address the issue. It would be real hard for the State to say they have no options if the current court rules against them and lays out directions.