In PoE if a team mate dies and you don't revive him, leave him in the room after a a round and return to airlock, the player is left where he is but dead. When you enter the next room "Variks summons all guardians" and the player does not move, but it repeats the summoning a few times over. The only way to sort it out is to wipe or survive and happen to go back into that room.