jourdain - // I can't knock his belief in returning Labour to a straightforward socialist party. He is making powerful enemies, I think. //
I think you are right.
I think that the allies of Mr Corbyn live in the same twilight unreality that he does, a world where an ideal socialist society exists, and they live there, untouched by the simple reality of a party that is trying to move to a position of being a credible opposition to the government of the day, and instead they live in their world which consists of their world view and literally nothing else, certainly nothing as frightening to them as reality.
I read that Mr Corbyn is actually obsessed with politics to the extent that he is not known to have read a non-political book in his adult life, and his entire conversation consists of politics because he knows and cares about nothing else.
That's not the sort of person any political party wants or needs anywhere near its power base, and certainly not seen as some sort of figurehead for a fiction notion of socilaism.