Until they put in a vote to kick option, people like this shouldn't be catered to and you should just leave your group immediately. Unfortunately it's going to be a colossal waste of time for everyone, but I'm not going to put in effort just for someone to sit at the entrance doing nothing and collect tomestones.

On another note, people really should try harder to get in an FC so you can do runs with people within a certain circle. Things tend to go a lot better this way. I've only been PUGing stuff on my secondary classes while attempting high level stuff within my FC only and it has been less stressful than the alternative.