It was in a dramatic vote of medium hand raising that the fists were almost as many for as against the proposal to establish the intention to stay in the EU.
Meeting chair Wendy Nichols looked out at the 1,200 delegates and said the proposal had been voted on, to directly correct themselves and say it was voted down.
Voting requirements were rejected.
In doing so, the exposed Corbyn managed to gain support for his stance on trying to either of the two phalanges by pushing the decision - either until after an election or by a new referendum. Until then, you are neither for nor against.
But Labor and Corbyn's attitude has meant that the party lost voter support in the latest opinion polls, this weekend two polls showed that the party is 15 percentage points after the ruling Tories.