So? If you feel the cops were in violation of this stop and fisk law, then say so.
But the fact still remains that Zimmerman WAS NOT ARRESTED that night.
Here's the other part of the law you're ignoring.
(4) If at any time after the onset of the temporary detention authorized by subsection (2), probable cause for arrest of person shall appear, the person shall be arrested. If, after an inquiry into the circumstances which prompted the temporary detention, no probable cause for the arrest of the person shall appear, the person shall be released.Zimmerman wasn't released. He was handcuffed and removed from the scene in a police car, therefore he was arrested according to the law -- the law of Florida, and the law according to the Constitution (look up Florida v Royer (1983)). Your use of caps lock doesn't negate that.