Found: A spine

To get rid of Brown, you need this turbulent (ex-)priest.

At last a Minister remembers that his responsibility is to the wider public, and not just his party.

Or

Despite his generous majority, the prospect of unemployment after the next election is too much.

Or

The party has lost it's soul, and {insert name} must wield the sword and take control.

Whatever way you slice it, this is the end (of the beginning of the end) for Brown as he presides over a party at war with itself and a public that has lost all fair in his leadership.

Time will explain David Cairn's real reasons, but if Brown continues to ignore the obvious then his legacy for Labour is going to be even worse than he could have imagined in his biggest, baddest nightmare.