My question is (and I apologize since it’s probably been answered in one of the myriad Zimmerman conversations here lately) what relevance, if any, does the fact the 911 dispatcher told him to stay put have on the case?

Someone mentioned a couple of days ago that the dispatcher is not an LEO. Even accepting that, most people would think it good common sense that when you call 911, you should probably do what the dispatcher ordered.

Even if Zimmerman had lost sight of Martin, the cops were already on their way, they could well have caught up with him later.