Not sure what you lot want from the kid, and I assume he's a kid. If he's a grown man, he's a got a completely different set of issues he can deal with himself.
So he copied a few posts to appear witty and contribute more. There's a desire to be appreciated or liked that led to it happening in the first place. Suffice to say he's learnt the hard way that his way was wrong, at least online.
By all means, take his case, let him not forget it for a bit if you want. But a fan forum is the one place he would've felt comfortable interacting in, with more people who think like him on it. Alienating him isn't the answer to anything.