While Qf will know exactly when and how to react should the PIA go ahead, maybe making a personal choice beforehand not to continue doing any OT will be enough to make a difference.
All the time their OT slots are filled then the operation continues without any problems and they will continue trying to drag this out for as long as they can.
Why not be unavailable for a few weeks. Many must be cashed up recently. No point waiting until this all kicks off officially.