*sigh*
The term "raid" dates back the old times when there were more clans, and they would raid other clan servers, causing as much chaos as they could before they got banned. Like you said the ?¿ doesn't necessarily make you and your friends a clan but it does give the impression that you are all in the same group and "(t)rolling" together. It at least looks that way from the chat log
here. When such events happen they are classified as raids, for lack of a better term that's one syllable long.
Anyway, if you were paying attention or even just read back through the previous posts, you will discover that your ban was put in place before the whole raid thing was even brought to attention. To be blunt, you got yourself banned, it was not the sole result of your groups actions. Those just added to the fire. Jawfin answered your request in the first reply to your topic:
Jawfin wrote:Hey Mark, welcome to the forums 
The reason was constant trolling after being requested multiple times not to. The proof that it was well received was all the rejoicing on server after it was effected. I don't state this to insult you, just to show that it was justified.
[sarcasm]But please, make more threats, that way we really want you to hang around with us.[/sarcasm]
Or perhaps, when you're ready, you could play without upsetting everyone.
Now since I might have gotten your memory remembering things I would also like to remind you that you have yet to post an apology(heck, just a "No, I won't do it again" might have even worked) and instead just posted threats and tried to insult the only people who could remove that ban.
I would also like to remind you that our server(and forum) is owned by members of KR and that it is a privilege for everyone, even myself, to play on it. You don't have some sort of right to play on our server and disrespect us and our rules. If someone invites you into their home for a party, you don't start insulting the people who live there and disregard the house rules. You would likely be kicked out, banned in this case, until the owners of that home see fit to give you a second chance in. I hope you get the idea and how it relates to you.
I hope this clears things up and answers the question as to why you are still banned.