Other way around. Severing the conservative Third World congregations would leave the Church of England in the hands of the Pooves' Cabal and the morally temperate American Episcopal congregations dangling. That would forestall any rapprochement with freshly-chastised Rome. The gay Anglicans won't be able to pull the wool over Jesuits' and the Roman Rota's eyes, so the gay Anglicans will abort the ecumenical approach to Rome, IMHO.