First, right to work relates to union membership. It has nothing to do with anything in your post. You mean, employment at will, whch means that either you or the employer can terminate the employment relationship at any time and for any reason (except one specifically prohibited by law). No state ever requires the employee to give a reason; only a handful of states require an employer to give a reason and even in those states, only if the request is made in writing within a limited, (state-specific) period of time. Only Montana is not an employment at will state, and even Montana recognizes the employment at will doctrine in some situations. Florida is not one of the states where the employer is required to give a reason to the employee on their written request.
I am having a hard time following your post. Are you saying that you own a competing business? Or that they want you to be instrumental in the forcible takeover of your previous employer? Or something else altogether?

