Hours before his announcement he admitted to a group of senior clerics that the initiative is likely to collapse and spoke of his sense of “foreboding”. He announced he would step down as leader of 77 million Anglicans early, ahead of a series of votes in dioceses which would spell the end of the unity pact on which he staked his credibility. He acknowledged his decade-long tenure had been marked by “crisis management”. But he issued a robust defence of Christians, insisting that the faith was far from losing a “battle against secularisation” and spoke with passion about the Church of England as a “treasure” which remains a place of “inspiration” for the nation. His comments came after weeks dominated by a public debate over the role of the church in national life, including a High Court ban on council prayers, the row over gay marriage and the controversy over the wearing of crosses.See more here
Indeed Christianity is under attack, the one, holy, catholic, and apostolic Church most of all. However the Church of England most certainly feels the effects as well, being the state-church after all. His resignation is both politically and religiously significant. What will happen to the Anglican Communion now?
A lot are finally coming home to the Church through the Ordinariates, maybe we'll see a surge of conversions?