Traditional Anglican ping, continued in memory of its founder Arlin Adams. OK, what are they saying here? Who won?
Lambeth Conference of 1888
Resolution 11
That, in the opinion of this Conference, the following Articles supply a basis on which approach may be by God's blessing made towards Home Reunion:
(a) The Holy Scriptures of the Old and New Testaments, as "containing all things necessary to salvation," and as being the rule and ultimate standard of faith.
(b) The Apostles' Creed, as the Baptismal Symbol; and the Nicene Creed, as the sufficient statement of the Christian faith.
(c) The two Sacraments ordained by Christ Himself--Baptism and the Supper of the Lord--ministered with unfailing use of Christ's words of Institution, and of the elements ordained by Him.
(d) The Historic Episcopate, locally adapted in the methods of its administration to the varying needs of the nations and peoples called of God into the Unity of His Church.
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If they really mean it, then yes, they have "caved" - or, rather, they have returned to the historical Anglican faith.
This seems to be a direct response to the request that the ECUSA not participate:
"We reaffirm our continuing commitment ... to participate fully in the Anglican Consultative Council, the Lambeth Conference, and the Primates’ Meeting..."
They're trying to talk their way out of it. Technically, the General Convention did not develop or authorize rites of blessing for same sex unions. It gave individual dioceses and diocesan bishops the authority to develop and implement rites for same sex blessings as they see fit. Instead of dealing with this issue, the bishops, as a whole, are attempting to pass it on to individual dioceses. Now there's some real leadership.