That doesn't mean that neurons could be in multiple states at the same time which is what you were implying. That particular assertion is still horribly wrong.

'...the assumed brain function producing entanglement, must use a kind of quantum distillation process on mixed states.'

again, that doesn't mean neurons can exist in multiple states. There is also no also indication higher level computational functions in the brain responsible for reasoning or whatever have you require any quantum computations.