An apparently unrepentant David Cunliffe is understood to have tried to persuade his Labour caucus colleagues he had not acted to undermine David Shearer's leadership when defending himself in a brutal caucus meeting yesterday.
Mr Shearer stripped Mr Cunliffe of his fifth rank and portfolios and sent him to the backbenches yesterday for disloyalty after Mr Shearer sought and received an unanimous endorsement from his caucus colleagues.
Mr Shearer called the urgent caucus meeting after the party's annual conference last weekend, during which Mr Cunliffe repeatedly refused to rule out challenging Mr Shearer and refused to pledge to endorse him in the future.
Sources said Mr Cunliffe angered some MPs in yesterday's caucus meeting by trying to explain his actions away and deny he was trying to mount a leadership challenge.
In return, he was given a brutal drubbing by many of his colleagues in the meeting, described by one MP as "sobering", and from which Mr Cunliffe emerged looking rattled.