Unfortunately, the dismissal of your employment and removal from the office was something this employer was within its right to do. Working in Florida without a contract subjects you to the at-will doctrine which allows the employer and/or employee to terminate the employment relationship for any or no reason as long as it is not for an illegal reason. Nothing you provided here indicates an illegal reason. The employer is also within its right to ask and order you to leave the offices. I recommend you do not attempt to return as you can be arrested for violating that warning.
Although you don't mention having a job injury in this posting, there was an earlier posting which sounded very familiar to the facts you list and I assume you asked your question twice. In the first posting, you mentioned having a work injury. If you get fired after filing a workers compensation claim, the law gives you the right to sue for retaliatory discharge in Circuit Court. You must prove that you were fired because of the workers comp claim and not because of any other reason.
The answers given are limited to the facts as given and presumed by the answer itself. Without seeing actual written documentation or having a conference to more fully explore the issues, this short answer has only limited application. Make sure to seek legal counsel and provide all documentation to get assistance in making informed legal choices. firstname.lastname@example.org, 305 373-1099.