Well to be perfectly fair, one could say that the Trader is "roleplaying" that he's some crazy maniac who craves for death, even his own.
Edit: Do not take my word for it, as it is an interpretation of the rules. But I personally believe this OORP rule was installed to answer for those persons that were actually acting a form of clear OORP behaviour.
As for your situation Jure, it is a grey area (seeing as it can be OORP and RP depending on a persons view) and in my opinion feel it's pretty lame to sanction report for such a thing. Seeing as the Admins have far worse matters to deal with.
You can perfectly roleplay out of a situation like this and it shouldn't require an Admin to step inbetween.