If you decertify, then where is the leverage for eventual endgame and release?

Every other pilot group uses pilot negotiators. This is not rocket science. And the notion of a "skilled negotiator" weaving a magic spell and leading the company into agreement is a pure fantasy, and betrays a lack of understanding of how the process actually works.

Every other pilot group uses pilot negotiators. What is sometimes needed is a talented ADVISOR.

Anyone who thinks going it alone is a wise move should cite an example where decertification and bringing in some sort of negotiations ninja closed the deal. There is no "talking the company into it", you will get the deal when they need the deal, or when you get released.