Splitting hairs? Told him "we don't need you to do that" when GZ answered yes to following him. Either way, anyone with common sense would know that meant not to follow him, so what did GZ do? Follow him.
OK apparently means "go to hell" in GZ's book.

No evidence supports the claim that he continued to follow Martin.
As a matter of fact Zimmerman had lost sight of Martin at that point as was looking for a street sign.
our evidence is the phone call till he hung up and "then went back to his car to find the cops". Then we go into a grey area where nobody but zimmerman and Martin could tell what happened.
Somehow no evidence supports he followed Martin but there is evidence Martin attacked first.....
Yeah....bias they name is Lonestar
Ok let's look at the transcript from when the dispatcher said "Ok, we don't need you to do that." and Zimmerman replied, "ok".
Please highlight the part that indicates he is still following Martin.
Dispatcher
Ok, we don't need you to do that.
Zimmerman
Ok.
Dispatcher
Alright sir what is your name?
Zimmerman
GeorgeÂ…He ran.
Dispatcher
Alright George what's your last name?
A clicking or knocking sound can be heard here
Zimmerman
Zimmerman
Dispatcher
And George what's the phone number you're calling from?
Clicking or knocking sound is heard again
Zimmerman
[phone number removed]
Dispatcher
Alright George we do have them on the way. Do you want to meet with the officer when they get out there?
Zimmerman
Yeah.
Dispatcher
Alright, where you going to meet with them at?
For the remainder of the recording, Zimmerman sounds distracted. The knocking sound occurs several times during the final exchange with the dispatcher
Zimmerman
Um, if they come in through the, uh, (knocking sound) gate, tell them to go straight past the club house, and uh, (knocking sound) straight past the club house and make a left, and then they go past the mailboxes, that's my truck...[unintelligible]
Dispatcher
What address are you parked in front of?
Zimmerman
I don't know, it's a cut through so I don't know the address.
Dispatcher
Okay do you live in the area?
Zimmerman
Yeah, I...[unintelligible]
Dispatcher
What's your apartment number?
Zimmerman
It's a home it's [house number removed], (knocking sound) oh crap I don't want to give it all out, I don't know where this kid is.
Dispatcher
Okay do you want to just meet with them right near the mailboxes then?
Zimmerman
Yeah that's fine.
Dispatcher
Alright George, I'll let them know to meet you around there, okay?
Zimmerman
Actually could you have them, could you have them call me and I'll tell them where I'm at?
Dispatcher
Okay, yeah that's no problem.
Zimmerman
Should I give you my number or you got it?
Dispatcher
Yeah I got it [phone number removed]
Zimmerman
Yeah you got it.
Dispatcher
Okay no problem, I'll let them know to call you when you're in the area.
Zimmerman
Thanks.
Dispatcher
You're welcome.