I'm a bit busy with work but I'll answer some questions.
It was a semi-hardcore-ish guild, with a website etc. There was a 'post a pic of yourself' thread so I chucked up a picture along with everyone else, so he knows what I look like. He has my address and full name which is a bit disturbing but more so at how easy you can find that stuff out.
I know 100% he's in the forces, his wife played the game too and they regularly had barnies whilst on voice comms giving us all a glimpse into the family life. His pictures were all consistent and everything he would talk about all indicates that what he was saying was truthful. He would go into a lot of a detail about his career and life etc, a little too deep if you ask me (regularly discussed his sexual encounters in front of 20-30 other people on ventrilo).
The problem I have is I know he's called Neil but that's about it, when I left I was locked out of the private area of the website and so I dont have access to any of his information so it's literally in the GMs hands at Blizzard.
I'm not out to cause a riot, I just want him to bugger off. Oh and yeah I'm mid 20s and it's not a roleplaying server just a regular one.
As for the direct threats, he's been quite clever about that - looking at what was written it suggests we're old buddies yet they're subtle threats to myself.