MEANWHILE, an insight into the subtler manipulations of the sultans of spin. John Bangs, head of education at the National Union Teachers, waits in their in-house radio studio for a live link-up with Education Secretary David Blunkett at London's Millbank studio. The two are about to cross swords on voational GCSEs. A switch is flicked and Mr Bangs listens in privileged silence to the Millbank preparations. Spin doctor Conor Ryan delivers his painstakingly prepared briefing: "You're about to talk to John Bangs. He'll go on about grammar schools and secondary moderns."