Have any noted "free market, deregulation" advocates changed their tune?

Was your teacher Alan Greenspan? Because in an article in the Times yesterday about his fading reputation, it said that he still doesn’t consider the cause of the current problem to be deregulation, but rather Wall Street people acting dishonorably. He won’t talk now, but this is in his book, and his spokespeople direct reporters to his book for his take on things.