How is Snowden transporting all of the stolen documents?
I would think that he would be smart enough to not have any of this material in his possession. The best way to do this would be to have uploaded everything to the cloud. Divide it into 10 different portions and upload each portion to a respective one of 10 different email addresses. If forced to disclose the info, lets say by the Russians, he could just give them the info from only one of the email addresses. If he were to give up everything, he would then be of no value to his captors.
Even if he were to receive asylum in Ecuador, he would not be able to live a normal life. It would just be a matter of time before he is taken out by a hit squad, as a warning to others.
They are already talking about which actor would be best to portray Snowden if made into a movie. I think Robert Pattinson or Hayden Christensen would be a good choice.