I remember him stabbing Corbyn in the back, almost simultaneously with Jon Lansman (perhaps a month or two between the two betrayals). Meanwhile, seemed to have had a good grasp of LP manifesto proposed economics. I think he is an old Trot, but could be wrong (seen him from a 2 m distance). Not sure why it all went tits up in this particular instance. Waiting for an analysis that will ring the bell with me.