How would this person know what GZ's wife's phone number is?
I have a theory as to what happened in the missing one minute and right after GZ ask the non-emergency operator to have LE call him, as to his whereabouts, when they arrive.
In his call there are several tapping noises, like a quiet knocking on someone's door. Several people, including the man going by the name "John" have said they were outside and saw the "scuffle."
It is possible that GZ had a pre-arrranged signal for a "friend" and/or neighbor witness for any future sightings of "suspicious" people. Perhaps for the friend to come outside and help him corner a "suspect" and then go in and call 911. At the same time as this man "sees" the altercation a woman is calling 911 and telling someone named "Jeremy" to come inside. Then, after the gunshot, a man...so far unidentified calls 911 to report the one in the grass is dead.
It seems Travvon was cornered and feeling threatened and possibly physically accosted tried hopelessly to defend himself. If GZ, as he has had others state, went for his cell phone and his gun was not already out then it is possible that Trayvon saw the gun and started to run. Yet, he suddenly is impeded behind this women's house who just happens to be saying "Jeremey, get inside..." while she continues to report the fight and then gunshot to the 911 operator.
I would hope that LE and the DA will subpoena the call records of this Jeremey, "John" and the first 911 caller. IF you saw heard a fight and a gunshot and then could see a young guy lying lifeless on the ground...would you go outside with a flashlight and your camera, approach the shooter and take a picture of his head.....