The section where the HT spoke was heart-reading and enraging all at the same time - it reminded me of when DS1's teacher was placed in a similar dilemma a few years back. Make the data conform - we don't care how, and we don't care whether it's what your kids need, or what it does to them. Fail to do this, and you're out of a job.
Everything I've heard about this guy has been positive, he sounds like he's one of the few who walks it like he talks it on inclusion. There's not many of us here who've had positive experiences working with school HTs. The system is genuinely fucked beyond the point of repair if people like Nigel Utton can't find a way to continue without breaking themselves.
I think he's getting a gig with IPSEA though - I doubt that it's the last we'll see of him.