Ok guys, here's my thoughts on this situation:
Killing Duck did Very Bad Things. We thwaped him with the digital equivilant of a lutefisk. Now, in a few threads (Cath Bruig vs Province, mainly), he seems to be playing nice, admitting mistakes in his theories and genuinely requesting information.
So, here's my suggestions.
Killing Duck, keep playing nice and work on you're debating skills. Be carefull on the foul language, and in general, don't take things personally unless they obviously are intended that way - and even then, if you can, try not to get upset about it. It's just text, nobody's screaming in your face. Also, it's considered poor nettiquite to have multiple people posting from the same computer, as that is often a trick employed by trolls (people who are only trying to get others upset).
Everybody else, give Killing Duck a second chance. He attacked me primarily, so if I can, you can too. Let him try to play nice, and see if he can assimilate into our little crazy house here. Be considerate, and politely point out when he's getting out of line.
Now, can everybody play nice and not piss anyone off? Good.