Narog, on the other hand, was required to give an out to the other players more than an OOC tell 'You were buffing you consented PvP'. Something more like *grows viciously, teeth bared and ears pared, indicating the wild beast may attack unprovoked at any moment* would let the other players choose how they want to react, either taking their out by leaving, charming or some other means of calming the situation, or standing their ground and perhaps fighting the animal.While polymorphed into a form that is not your own, you are perceived as what you have become. This is considered consent to PvP until your character shifts into a less threatening form or into their natural form.
When the orc was knocked out in Nashkel, the victorious players should have choosen the outcome and not simply 'The orc walks off limping,' which was token lame meta cheese on behalf of Narog.
Narog's actions ICly are not wholly acceptable in my opinion, neither at the outset or the outcome. The other players involved are blameless.The victor decides if the victim is subdued or killed, but any actions done to the victim's body is done with the victim's clear consent. Keep any consequences tasteful and PG-13.