I was just sent a link to the following article on The Episcopal Cafe's The Lead which offers some helpful comments about Bishop Robinson and his banning (or not, not at least technically) by the Church of England....
From The Episcopal Cafe:
We are linking to this report in the increasingly tendentious Living Church to correct the mistaken impression it attempts to create.
George Conger writes that Rowan Williams has not been banned from preaching in England. This is technically correct. Williams doesn't have the authority to ban Robinson. However, Robinson told Williams several years ago that he would not preach without Williams' permission. Williams did not grant it. And in an email he sent to Robinson earlier this week he said that he did not think that "any extenstion" of the previous arrangement "in terms of permissions" would be appropriate because any public celebration "or even a sermon" would create controversy for Williams and whichever bishops gave Robinson permission to preach.