Welcome to DC.
This is not a good ruling. You are responsible for every bullet that leaves your gun, and you MUST be sure of your target. From what has been publicly reported in this case, clearly, the individual in the car was NOT presenting any immediate threat of death or great bodily injury to the shooter or anyone he was defending. He shot without identifying his target. I wasn't there, and maybe the situation would look different if I was, but it doesn't sound like the judge got this one right.
If we want stand your ground laws to go away quickly, this kind of ruling will help that along quite well.