Jim,
As you know, a non profit corporation needs to comply with
Florida Not For Profit Corporation Act (617) As a co-op, the association must also comply with
FL Cooperative Act (719) As a co-op,
FL 720 is not applicable.
If your co-op is a condominium (vs. single family homes) then
FL 718 would already apply.
Therefore, it sounds like your Board, and member of the association, want to have FL 720 be applicable to them and not 719.
I could not find anything within the statutes that specify or imply what percentage of homeowners must agree in order to disband under 719 and regroup under 720. Your probably going to need an attorney knowledgeable in HOA laws, corporate laws and contact law (as it will probably boil down to what is written within your governing documents) to give you a good answer.
Tim