Probably the single most devastating critique of Rowan William's advocacy of Sharia law in Britain comes from a Muslim woman writing in the Independent.
Look around the Islamic world where sharia rules and, in every single country, these ordinances reduce our human value to less than half that is accorded a male; homosexuals are imprisoned or killed, children have no free voice or autonomy, authoritarianism rules and infantilises populations.
The really scary thing about Rowan Williams is not that he is deviant but actually representative of a certain type of soft-left individual who believes in Global Warming, organic food, and the "inevitability" of certain kinds of social engineering. How much better informed are the supporters of certain US Presidential candidates than Rowan Williams, for example?
Ignorance is a form of entropy. And the West is running out of energy. Rowan Williams may have run out of energy sooner than the rest. He sees the future and it is now.