OMG are you really all so naive? Have you not watched "The Thick of It"? Do you really not know that chief whips are the dark side of politics? That Blair had not only a Chief Whip to keep the MPs in line but Alistair Campbell, supposedly the most abusive person in politics, to step on them. Rosie Winterton should have stamped down hard and stopped the MPs conspiring against Corbyn before it got to anyone resigning. She didn't. Neither did the other whips. If someone fails to do a job they get sacked, doesn't matter how long they have been in post. And don't imagine that it is just Labour and Corbyn who behave like this Conservative Whips do exactly the same.