I think it is now a sense of pride for brown more than anything else now, He knows hat the majority of the coun try see him as the man who ruined our economy whilst in the reign of Blair (be it true or not), and as he was made primeminister by default, we feal that we have been jilted by the government and that we should have ha the chance to vote our new PM in.
I think the labour revault is also part of a scheme to try and get back votes to labour by appearing to agree with the general public and get rid of the one who is being blamed, once he is out of the picture they can rebuild buy saying 'we didnt like hm either, heres what were gonna do better now hes gone'
THing is labour are going to lose to the tories now, and theyre gonna be stuck with the mess were in, and ultimately be blamed for not bringing us out of the recession fast enough.
basicly there are always going to be problems with the people who run our country and always going to be complaints. but yeh, think Brown should leave now before all of his self respect is stripped away publicly when further cabinet ministers step down and he loses the election