That is what GZ says, but that is not what the evidence shows. Where he ended up killing TM does not support him trying to return to his car. The jury found that he was not guilty of murder, but I do not believe that the jury has gone step by step and stated everything that they believe happened up until the shooting. As far as I know, all we have that supports GZ's claim that he was returning to his car is his testimony.
That's the map. I cannot see any possible way GZ can claim that he was returning to his car. The fight happened between the buildings in point 5, pretty close to TM's home. If GZ had gone past that point and backtracked TM would have probably been home already...
So yeah... it's not a half truth that I left out what I believe to be BS.