Jeez, for the millionth time, it was a low-paid dispatcher on the phone with Z man, not a police officer. Her words did not have the force of law.
What is your point? The police dispatcher told Zimmerman that officers were coming to the scene and that he should return to his car. Zimmerman was doing so. Trayvon Martin reversed course, followed Zimmerman and assaulted him. This is not difficult to understand. Zimmerman shot in self-defense.