The critter chitters a bit with its mouth parts - which Varric has seen in more than enough detail the past couple of days to last a lifetime - but he thinks he might be able to get to Banshee through the doorway. He can tell it's Banshee - he can see the lights in his periphery vision.

"I'm going to take my leave, I think," in the same tone as he slowly, smoothly slips around the creature - it turns, swaying as it follows his movements - and backs up towards the doorway, "and holy shit, I hope this door locks."

Please tell him it does, Banshee.