In some jurisdictions 911 dispatchers are sworn officers. Furthermore, the 911 dispatchers work off a script! They are not autonomous, and are required to work within jurisdictional laws, any "advice" or "instructions" they give out are pre-approved.No law enforcement officer ever told George Zimmerman to leave where he was at.
DC
For all any of us know, the dispatcher is a LEO, or had a LEO standing there while giving Mr. Zimmerman instructions.