Dren had made it outside, free from the fray and any further combat. He didn't know what was going on and he didn't want to be a part of it. All he wanted now was to abscond from this ship and make tracks, hoping none of those soldiers recognized him or his entire reputation could be ruined. 

But on arriving to the side of the ship, he realized they'd taken off again... amidst all the chaos and dancing he must not have noticed. Too far to use his short range teleport spells either... there was no way down from here without landing the ship. And he couldn't do that on his own... 

Well, considering there was fighting going on, the best course of action for now seemed to be to hide. So that's what he did, making his way along the side of the ship quietly and seeking a little solitude until this all blew over.