That was not the only option.
I stayed in the AOA, protested in writing (and verbally), and actively encouraged my friends and peers to do the same.
When that failed, I ensured my vote counted by helping ensure the masterminds of this were not re-elected. Had I quit the AoA, then I would have had no say in anything relating to my contract in the future - not just the 'one issue'.
Oh, and in the meantime, I sent some spare change to the CPU to help support the 49ers case.