On February 22, 2012, the Falkirk MP threw a drunken punch in a Commons bar that would not only end his own career, but ultimately plunge his party into its biggest crisis in years.
A month after the brawl, Joyce resigned from Labour, but said he would carry on as an independent MP to the 2015 election.
For some it was an insult to his constituents, for others a personal tragedy.
But for Unite, Labour's largest affiliated trades union, it was a golden opportunity.
The Nationalists pounced on the blunder in a high-profile report from Vince Cable's business department, which will be published next week as part of the Coalition's case for the Union.
The report, the fourth in a series ahead of the referendum, claims Scots homes and businesses could suffer from a reduced postal service and inferior broadband coverage under independence.