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I would not be worried about any legal ramifications, as there were no actions taken by you in this role and no obligations to act in any manner during this time. You can resign at any time per Florida law:
617.0842 Resignation and removal of officers—
(1) An officer may resign at any time by delivering notice to the corporation. A resignation is effective when the notice is delivered unless the notice specifies a later effective date. If a resignation is made effective at a later 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 of directors provides that the successor does not take office until the effective date of the pending vacancy.
(2) A board of directors may remove any officer at any time with or without cause. Any officer or assistant officer, if appointed by another officer, may likewise be removed by such officer.
There's no set method to deliver this notice under the law. The best thing to do is to have one that you can prove receipt. A fax could do this, but certified mail, return receipt requested would be best. An email to the board and a response from the chairman that it's received would also suffice, but again, proving the receipt would be what you would want. If it were me, I would deliver this notice in a number of manners (email, fax, mail) just to show that I took all reasonable methods to appraise the board of my resignation.
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