See, like the police operator, you need to actually ask. A mere observation like "we don't need you to do that" or "I'd be curious to hear what you think really happened" might well be ignored
OK Zman is driving north on Retreat View Circle when he sees Martin returing on the snack run taking a short cut and entering the community between two blocks of houses in the NW corner.
Now Zman is steaming over the incident 3 weeks earlier when he spotted a perp "looking at houses", who escaped before the cops arrived and when he was caught 4 days later Zman was not given the credit.
So he thinks he's spotted "another one", follows him slowly until Martin goes into the clubhouse area. Zman turns into Twin Trees Lane and stops to make his call to the police operator. This activity looks highly suss to Martin, who walks slowly past and when clear runs.
When he gets clear of Zmans sight, he doesn't want to run home down the walkway between the houses, because if the weird guy is following (and he is) Martin will be seen running down the walkway before he reaches his house, showing the neighborhood pervert where he lives.
So he ducks into the shadows by the short fence of one of the houses, until he can figure what the weird guy's deal is. As he can see the weird guy is not near, he is talking to his girl friend (but not girlfriend) quietly.
Meanwhile Zmans follows the horizontal walkway to Retreat View Circle. As the ******* is not in sight on RVC, he tells the operator the perp is making for the rear entrance (presumably by the walkway) Zimmerman's call to the police ends.
He now turns down the walkway and starts to shine his torch into the shadows by the houses.
Martin realizes he has a Javert and decides to face him. He approaches ZMan whilst Z is inspecting one of the houses on the other side, so appraoches Z "from behind" .
Martin: "Why are you following me?"
Zimmerman: "What are you doing in this neighborhood?"
Martin: "Do you have a problem with that?"
Zimmerman: "I don't have a problem" (reaches for his pocket)
This is the point Martin believes he is in serious danger - something occurs, phone call to G F cut off.