Having not been there, all I can say is that they likely thought you were going to just sneak off since you were performing a craft while hidden (even if it was the camp out, and maybe they thought you were camping to try and evade them all together?). I'm not particularly certain where the line falls on people performing crafts while hidden, I didn't bother following that discussion the time it came up last, though I personally think it's a cop-out.
Camping out isn't a craft, it's a coded command. Ontop of that, it's already coded in that you can't quit the game--or camp from the game--after having recently participated in combat.
It seems as though this is a good example of two sides coming in with the best of intentions, and the best of their ability, and stuff STILL going sour. This isn't really something that gets discussed a lot(this -exact- scenario), and it's one of those reasons that 'ALWAYS PUNISH' doesn't work in game theory scenarios. Eventually, you have to start forgiving people that have wronged you. You can't get a list, say, 'X and Y and Z were twinks grrrr.' That said, you can't go the route of 'ALWAYS FORGIVE,' either. You've got to roll with the punches and PK assholes...and you've also got to give opponents a second chance, sometimes, or it turns into an endless cycle of 'man they wronged me.'
Case-in-point, Zargen, Derren, toofast, and another guy once tried to PK my PC on Atonement. I played it so incredibly poorly(I have regrets to this day), and half of them died while my PC survived. It was an ugly scenario that went explosive very quickly, and I was at fault.
But whether it was on that PC, or this one, or who knows how far down the road, the games we're playing together aren't gonna get any better if they just go, "Yeah, Kory's the worst. Can't trust him." You gotta walk that fine line between forgive and forget and ending people that seem like they aren't gonna give you a chance.