More On Speaker Martin
Some say he was simply following the wishes of the House, that kind of talk is like saying "I was only obeying orders". Previous Speakers have had pressure put on them by various forces within the Commons, some wielding heavy influence. If you read George Thomas and Betty Boothroyd's respective memoris you will see that it happened to them and they responded against it rather well, in george Thomas's case by threatening to resign and explaining why he did so in his resignation speech. The opposition backed down.
Of course there will be some MP's who will have backed this hoping that he will be the scapegoat, to which the message to them is that they had better think again. The anger outside the Commons will not easily go away and trust will be hard to regain, to assume that the clouds will lift from over their heads now that Michael Martin is quitting shows how out of touch they are.