He didn't show up. It occurred to me afterward that he was trolling everyone, knowing that either (a) Chuck had found where he lived from a prior post of his and knew that the odds of Chuck actually living near him and actually showing up were slim to none or (b) Chuck had pulled a random location out of his ass and decided to "call his bluff". He "showed up" from in front of his computer. lol
Either way, he's just a run-of-the-mill internet troll trying to act tough, projecting his internet alter ego to compensate for his inferiority complex, common among those who were bullied as children and lacked adequate coping mechanisms. It's kind of sad really, if you think about it -- he doesn't mind having to defend himself from being perceived by others as a complete and total moron as long as everyone thinks he's a big strong tough guy.