It's quite noticeable how there's a vociferous minority of people who appear out of the woodwork whenever Corbyn puts his foot in it and argue he's done nothing wrong. Similar tactics are used when there's a tube strike and all of a sudden seemingly random people appear on the airwaves, all saying remarkably similar things in defence of the union line. Far too similar...
It's a well known tactic of course based on the he who shouts loudest school of thought. The difference with Corbyn is that I don't think most of these people respect him half as much as they claim. What the extremist element see in him is, I believe, an opportunity to exploit his weakness in order to further their destructive objectives. To that extent Corbyn is a tool in more ways than one...