There are a whole load of issues here.
What he did before the ban was ignorant at very best and horribly destructve at worst. I think its a combination of the two to be honest.
A lot of people place a great amount of personal value and investment on these forums which builds a community and support system. The problem is that in reality its a faceless forum on the internet about which a lot of people dont care or see it as something they can bulldoze through thoughtlessly.
This chap is someone who doesnt value the site, his lack of remorse for his actions and his comments yesterday prove that. The fact seedy tried to garner him a little support by possibly elaborating a bit on his request to return and he then shot him down says it all.
He doesn’t overly care about the site or what anyone thinks of him so with that its pointless arguing with him or kicking off. The absolute best thing anyone could do is ignore him. It will soon get boring trying to be like that if no one acknowledges youre even here.
Seedy did the right thing giving him a second chance but i think the way it all quickly degenerated shows how it will continue though. Just ignore n crack on, nothing can be changed about what has happened only thing you can decide is what will.