Whatever you said in your letter, ask your lawyer about litigation against the Elders as "individuals" for defamation of character. They are going to defame you by DF'ing you. Since the Elders have a "special relationship" with the local R&F, they are responsible in part for your treatment. If they say "apostasy", then explain to your lawyer what they are really saying, and use WT literature. Make sure your lawyer knows that they consider you mentally diseased, satanic, deserving of death. Also mentions the hate-speech trouble the WTBTS got into last year.
Don't be suprised if the catch-all phrase "brazen conduct" is used. That's why it exists, to give them a way to DF you for whatever they want..
Definitely contact your lawyer and see if they have been contacted by the WTBTS, then go from there. BTW, I would love to know what you said to the BOE. No pressure..
DD