He allowed a free vote because it was clear he had not got the clout to have a whipped one and not be embarrassed by the outcome.
You seem to have an amazing capacity for revisionism and self delusion.
He didn't have to allow a vote. He did. These are facts. The horrible problem for Corbyn's critics, and you illustrate it here, is that he is one of those rare things - a politician with principles. You may or may not like them, but insulting me doesn't change that.