well for the fu id assume someone was being mean although that probably wasn't the best words to use, i like to swear but not for being mean nor anything alike although i know you're rules and of course i wouldn't use it on your server due to the rules really, when i first started minecraft a few years ago i experimented with hacking to maybe thats were the flying came not honestly sure don't really remember, yes I love hardcore pvp servers were griefing is allowed and i love just destruction its just what makes raiding a city raiding a city to me, a bit of destruction, but i haven't griefed like that in awhile as well, now my rule is just stealing items and maybe sometimes a secret tunnel to get into there base, name on the hacking site is probably because i was into hacking on combat arms and battlefield when i was into the whole (hacking phase) which im sure everyone has experienced at some level.
But for your concern id like you to know i don't hack on minecraft anymore, that was quite a awhile ago, and anything of that sort i really just disconnected myself from it because i don't really enjoy cheating anymore it really ruins the game for not just myself but others as well, you're server looks amazing and its one id really enjoy playing on so i really hope my past doesn't cut into the future.