I have tried to Q into this twice and both times I was spawned into an instance with only one-two other players. The spawn was under the boss so I was unable to leave or to abandon.
In both cases I would try to fight with a team of two-three players. Eventually players would join and them console quit to leave. This made the instance unbeatable. As a result, the only way to leave the instance was to also console quit.
This has happened to me twice now. I am sure this is not as intended.
The spawns need to be moved.
Alternatively, there is a bug on PSN right now where you cannot get back in game.
http://community.us.playstation.com/.../false#M142688