Is J Street helping the 'Palestinian' drive for unilateral 'statehood'?

Is J Street, which as we all know is 'pro-Israel, pro-peace,' (/sarc) supporting the 'Palestinian' effort to attain 'statehood' unilaterally at the United Nations, an effort that, if successful, is likely to slam the door shut on further negotiations with Israel? Here's one report that says it is. The left-wing Jewish lobby J Street has been aiding the Palestinian Authority in its bid to