oh, you meant his meaningless verbal response rather than his actual physical response.
because for a second there i thought you actually wanted to know what zimmerman did, not just pretend like another one of his lies was somehow not a lie.
because what really happened was that he went on the offense after that. told dispatch to call him to find out where he was going.
he took two flashlights and a gun to go "looking for an address" where none existed for about 5 minutes.
in his own words, he said "and then i walked back towards him".
http://www.talkleft.com/zimm/singletontranscript1.pdf
that was zimmerman's actual response in his own words and actions.