
But is it enough? Will Tony Blair now get his 10 years after all? And will Gordon Brown really just sit back and wait for him to go, in the certain knowledge that each day that goes by gives his enemies more chance of finding an alternative?
No, I don't think so. The heart of the issue - the political dynamic which is really driving this crisis and which has caused it come to a head now - remains unresolved.
That is quite simply the desire among Labour MPs for a new leader to be in place by the time of the local and devolved elections in May so they can begin the fightback against David Cameron's resurgent Tories.
On my blog earlier, I set out an way in which that could happen, with a new party leader taking over in March, but Blair remaining PM until May - the "Aznar Option" as it has been termed.
This to me is the only way in which both sides can salvage something from this, but there is no indication that it is even on the agenda. Indeed Mr Brown, in his statement, seemed to go out of his way to stress there can be no more deals.
The only Blairite minister who has really been seeking to pour oil on the party's troubled waters has been David Miliband, who I must say has gone hugely up in my estimation today.
In his interview with the New Statesman, he not only ruled himself out of contention for the leadership - a sensible move at his age - but made clear that he wanted a stable transition to Mr Brown - and no-one else.
By contrast, some of the Blairites seem determined to try to goad Mr Brown beyond endurance, with John Hutton the new flavour-of-the-month among the ranks of the "Anyone But Gordon" faction.
One Cabinet ally of Mr Blair is reported to have told the BBC's Nick Robinson tonight: "He would be a fucking dreadful Prime Minister and I will do everything in my power to stop him."
Mike Smithson has a theory that this is what the row has really been about - that Brown has realised Blair intends to make a real contest of it by stringing out his departure and endorsing other candidates' right to put themselves forward.
If that proves to be the case, then this week's shenangigans will prove only to have been the opening skirmishes in a bitter and protracted civil war.