That aside.. this is the least significant piece of information here. None of this is in question.
The most important one, and the question that should be the only one that matters, is were those actions justified?
"I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter. So help me God."
Source: http://www.newyorker.com/news/amy-davidson/did-edward-snowde...
I don't know one way or another about a Medal, but this man has upheld his oath, and he did not allow reservation or evasion to deter him in it discharging it's duty. So help him.
Well, he did break the law. Hence pardon in the first place..
"Dropping the charges" would be more accurate.
http://www.politico.com/story/2014/01/edward-snowden-clemenc...
His accepting the pardon would be an admission that he performed the actions in question, but he admits that anyway.