I'm pretty sure there is, but they're not likely to have the numbers to make it go.
I say that because obviously Griswold has zip-zero credibility with the Anglican Communion right now.
It would seem to me the only hope ECUSA has is not only backtracking from its position, but electing a new PB who has some integrity and a grasp on reality. Unfortunately, I don't see that in very high supply among the bishops of ECUSA.