I'm afraid you can't leave a PL as of now.
This problem was brought up with the BBs before, so expect them to solve it over time. In the meantime... you're screwed.
Maybe...very maybe, the organiser could anulate the league? maybe you could send him a BB-mail and ask what is up, and if he can help you out.
They are not your friends; they dispise you. I am the only one you can count on. Trust me.