I see this slightly differently to Dr Alf.
Corbyn has been put there as a lightning rod for the disaffected, the disenfranchised and the under-achievers, while the real business of reforming the bloated public sector can eventually start unimpeded.
The “hard left” will through “direct action ” and rabble-rousing cause trouble. The UK Government and the authorities will use this as a pretext for more draconian security measures and intrusive surveillance which perhaps is as much about controlling the “great unwashed masses” as it ever was about dealing with terrorists.
The UK’s ‘Soft-Left‘ should not have allowed the Labour Party to be hijacked!