The REAL reason that the Episcopal left can't get its story(ies) straight is that it has no story!!!!
The Rest of Us have a story, the Gospel of Jesus Christ!!!! If the "Episcopal left" doesn't want that story, or wants to substitute another one (i.e., the idea that the "New UN" is the savior of the world), it should just pick up its marbles and go far, far away!!!!
I knew my story as a priest in TEC was going to get interesting back in the mid to late 80's when somebody asked me if I could tell him what "the Episcopal Church believes", and I realized that, as a "church", it offically doesn't seem to believe anything, not even its own words.
Episcopal clerics were happy to pronounce this and that to be the way it was, the true Gospel, the Saddharma, whatever. But it was always only the opinion they shared with a couple of their friends. HERE the Blessed Sacrament is reverently locked up in a little expensive and ornate closet before which one bows, and lay people are not allowed to touch the trappings and vessels associated with the sacrament until after a reverential decontamination by an ordained person. THERE we give consecrated hosts to dogs to eat and pour the consecrated wine onto the myrtle or down the drain to mix with the other sewage.
TEC new motto: "standing for nothing, falling for anything."