Hypersane sounds a little smug, but it feels close to something.
Like, there seems to be a difference between how smart a person is, and being [effective? rational? non-reactive? introspective?].
It feels like there's a spectrum of to which extent people are programmed by, and are reacting to, their environment. A spectrum that might be separate from how smart they are. Give them a text-book or an IQ-test and they'll do great, give them the news and they'll ineffectually berate and hate each-other, and so on.
So while a sane person might have a common social programming, an insane persons programming would be corrupted/deviant.
And a "hypersane" person would be someone who is more able to see their own (and others) programming, and to a greater extent be able to opt-out of some of it?