First the bold. Speculation and neither of us have proof to back our claims, so I'm not going to continue the circular argument.
Second, the underline. I was a 911 dispatcher. I can tell you factually two things here.
1) 911 dispatchers are NOT Law Enforcement, they are call center employees with a bit of training on crucial situations, and most are required to have a "Terminal Operator" certification so they can look people up in NCIC and FBI records - that's it. No law degree, in fact many places don't even require a high school diploma.
2) The 911 dispatcher did NOT give a command to not follow Mr. Martin. What she said was "We don't NEED you to do that" which is ambiguous. If the 911 dispatcher were to say "Do not do that!" this would be different, but I would still refer you to #1.
Now on to the rest of the post. In context to what I was replying to, if Mr. Martin felt scared his duty WAS to retreat. Mr. Zimmerman wanted to know what Mr. Martin was up to, I believe the question "What are you doing here?" could answer the question of "Why are you following me?" with a little common sense. I can not and will not speak on Mr. Zimmerman's behalf on why he did not ask the question before.
If Mr. Martin was really trying to get away from the threat, why didn't he make it home during the phone call with the 911 dispatcher that Mr. Zimmerman was on? He had plenty of time.