Did you see the words, Usually, and state specific in there? Also, did you notice that the article was about employee's recovering damages when an offer is rescinded, not about your situation?
Florida is extremely employer friendly. Your employer would be violating no law, either Federal or state, by making the deductions as long as you were left with Federal minimum wage times hours worked and any overtime you'd worked. You could try to sue the employer in small claims to get it back, but since there is no specific statute prohibiting the deductions and given the employer bias in Florida, there is absolutely no guarantee that you'd win.
You are, of course, free to try.