He has to serve trial before a sentencing would be delivered, but you are dead on suggesting that they set everything to a light sentence or even better offered him a light sentence as a plea deal. There's actually a lot of opportunity in that I think and also a lot of possible PR for whatever government would offer him such a deal.
I will call you out on one thing though:
> you don't get to break the law and escape punishment
1. It is entirely possible to believe someone has broken the law but at the same time find them not guilty.
2. (This is a technicality but) Snowden broke the law and is *currently* escaping punishment.