Why play by their rules?
Well, you can beat them at their own game.
Write a letter that threatens to sue if there's any negative mention of you at a public meeting.
Say that you are withdrawing membership from such-and-such congregation but in no way does that entail disassociation.
Say you will consider any attempt to contact you after receipt of the letter as a form of harassment.
Tell them you'll sue the BOE but not the WT, unless the WT provides legal counsel to the BOE and thereby including themselves in any judicial action you may take.
Live your life happily without encroachment from the elder-hounders.