Well he's been called terrorist and traitor, why not INTP too. It's not the worst slander. Nearly not.
I say his choice of subject matter and the manner in which he expresses it point to cognitive style. He talks hidden mechanisms of the real world and future consequence. He says:
"When you're in positions of privileged access, like a systems administrator for these sort of intelligence community agencies, you're exposed to a lot more information on a broader scale than the average employee, and because of that you SEE things that, uh, may be disturbing, but over the course of a normal person's career, you'd only SEE one or two of these instances. Uh, when you SEE EVERYTHING, you see them on a more frequent basis, and you RECOGNISE that some of these things are actually abuses, and when you talk to people about them..."
See, see, recognise, talk to other people to confirm. (And then get rebuffed and make your own choice.) If he ever anywhere says even one instance of "when you stop and think about it" or "it follows that" or "because of this non-contingent principle we all understand as true", then he's a damn terrorist for sure.
The stuff about whether or not he planned his escape, that can be answered by looking at his messy desk. He may have meticulously planned his escape and had feelers out for asylum well before switching to BAH, but he's also a white boy who's travel history was compiled on the company dime among company people doing company things. Suddenly he's a competent international operator?
If he sought asylum *before* becoming a whistle blower, he'd need some other reason to be accepted. He was being neither persecuted nor threatened before he made himself famous, so what would his grounds for asylum have been? That he was a spy who could spill lots of secrets for you, foreign government? And that's what he wanted?