I personally do believe that on some occasions you shouldn't have to go spec, and there is the occasional lack of the escape menu bug so you can't really ban people who go off and get stuck, in my opinion being stuck AND afk should be bannable, being stuck and being there shouldn't, and shouldn't even be kickable (with a few exceptions).
You have been banned for abusing QML. You kicked an archer, he reported you and you QMLed him later as revenge. You were clearly breaking the rules and you know that. You even got only an extremly short ban for it (only one single evening since the left over hours at night shouldn't affect you). No reason to cry here. You should ask yourself if this is really worth it to make such a drama (and to retire your main/quit the game/whatever...).
Why'd you only gave him 12 hours? He's probably one of the guys who has played the most, even if all the other things are total accidents then the screens show him hitting XyNox somehow (fists/kicks/weapon/bump/whatever), XyNox presses M, Leshma seeing this decides to do whatever the fuck he did even though XyNox pretty much has stated he disliked it by pressing M. This alone is undeniable griefing, and in the very next round despite XyNox pressing M two times before Leshma still decides it is a good idea to somehow teamattack XyNox in some manner or another, it's pretty clear that it is also near the spawning time. Leshma herself has clearly stated in the past that he seeks for vocal griefing punishment to more or less disappear and for real griefing to be punished harder, which is but another reason to lengthen his ban.
Throw in the QML and you have a pretty clear case of griefing another player (to which a 12 hour ban is insanely light considering that Leshma should have some history and that people are often punished much more severe (recall Lies once being banned for either one or two days for an accidental QML (was meant to be on someone else) on someone who didn't die or kill someone shortly after he pressed M) and Leshma once again being a hypocrite.