If Russia grants him an asylum, nothing will stop US media from screaming 'traitor', since, he, well, "fled" to Russia.
Usually countries try to keep their spies in positions where they can continuing leaking information, and usually they try to hide the fact that they are obtaining the information. Anyone who thinks that this looks anything like espionage is either uninformed or a US government shill.
"My position with Booz Allen Hamilton granted me access to lists of machines all over the world the NSA hacked,” he told the Post on June 12. “That is why I accepted that position about three months ago.”
http://www.scmp.com/news/hong-kong/article/1268209/exclusive...
Of course, this is trusting that the South China Morning Post is faithfully reporting what he said in the interview.