He was in Hawaii such a short time that he went in there knowing exactly what he was going to do and where he was going to go - to Hong Kong, where Wikileaks met him.
Very likely so. For one, I'm glad he spilled these particular beans. There are other ways of fighting terrorism than wholesale spying on the citizenry.
Snowden might turn out to have been a double-agent or some-such thing. My opinion of him would change at that point -- my opinion on his exposing the NSA's operations would not.