OOC: One. Okay, if he was a merc. Sure. But he only opened fire on you because you already had Civilians in your hold. He stated that totally in RP.
Two. After the fact, I watched you sit there blasting Civilian and Lawful NPCs left and right. Totally ooRP.
Either way, denying droppage of lawful pilots is completely ooRP. If they were just NPCs that you -had- to kill for some unknown reason, why wouldn't you drop them? That would be in RP, and abide by RP negotiations.