Okay, I would have given an oppinion on this earlier, but it's hard to get on the computer for enough time, so here's my take on this guy. (Finally.)
I think Vomeron is likely in his teenage years. It has been my experience that adults online act differently than you describe. He has a relatively short attention span for a griefer, as demonstrated by 420. A real pro griefer would likely spend much more than 45 minutes attempting to get out of that death cycle. I think that it is also a strong possibility that he is using multiple third party programs at once to achieve his goal(s), whatever they may be. He probably has a grudge against Godspire for something that happened to him in the past there or for some things that he has heard. Possibly one of the more intelligent of the CM lot with grudges, although I'm pretty sure that includes only a select few who listens to Bug too much.
This guy has patterns and is severely limited in what he can do, or else he would branch out in his tactics much more than he does. As for the part of "knowing Godspire well" and not "knowing much about Godspire," that's simple. By now, I think almost all of the regulars have been all around Godspire, even in the DM Lounge, and except the dungeon after a few levels. Likely he was here before, like I said, but only for a little while, possibly only a few hours before getting into trouble... Then he definitely wouldn't "know much about Godspire" as has been noted.
What Frank said about hiding his IP, that's definite. And this could possibly be solved similarly. Just keep on irritating him; God knows we can irritate him more than he can irritate us. And 420 will definitely figure something out to completely disable him as well as give us a few good laughs.
Well, Time to see for myself what trouble he is...be back with a first-hand oppinion soon!
Elessar