HOA resignation on unofficial facebook page

I recently posted to the UNOFFICIAL COMMUNITY FACEBOOK my intent to resign in 2 weeks with reasons why. We have a toxic president who physically and verbally attacked another female member and all of the remaining members also said they were resigning immediately. None of the resigning members, as well as I, emailed the board of directors with their resignations. We also did not get the necessary formal meeting with the president's acceptance. Being treasurer, my fiduciary duties reached beyond the stated resignation date posted on the UNOFFICIAL FACEBOOK PAGE, WHICH INCLUDED FILING THE COMMUNITY TAX RETURNS.
I extended my resignation, giving me enough time to complete my duties. I stated our covenants and told them my resignation was not valid because I did not sent a letter of intent to resign to the Board of Directors. Well, the President of the HOA and her buddies are calling me everything but a child of God. I was even threatened by a usual vile member of the community saying, "I bet a judge wouldn't see it that way!" At the same time, these folks were insulting me even more and saying "I was over" and the resignation was valid.
I am interested to hear the opinion this forum offers.

What they going to sue you for quiting? With what and who's money. Letting them have too much power over you it sounds like. Just turn in your official notice and walk away. No explanation needed. That is just drama. You do you boo.

Exactly Cathy. Simply send a certified letter if you want to confirm to the HOA address or President address if not one. If it is sent back do not open. It is proof it was delivered. Just make sure correct address.

Put it in writing and do NOT add to the drama. Simply put your name, position and the date you resign. Add a witness part of you want. Your reasons for quitting is not part of the resignation. It is part of the drama.

From the SC Nonprofit Corp Act:

SECTION 33-31-843. Resignation and removal of officers.

(a) An officer may resign at any time by delivering notice to the corporation. A resignation is effective when the notice is effective unless the notice specifies a future effective date. If a resignation is made effective at a future date and the corporation accepts the future effective date, its board of directors may fill the pending vacancy before the effective date if the board provides that the successor does not take office until the effective date.

(b) A board may remove an officer at any time with or without cause.