@Frank Apisa,
No, that's not what he's saying. He says the law prevents him from making a public interest defense, which is his defense and he stands by that purpose. It's also why he's eligible for political asylum in a foreign land. Those who are considering granting him asylum after his year is up in Russia are taking into consideration whether he had any legal recourse other than the actions he took. He did not.
edit: There isn't anything in the law that allows him to plead innocent and get a trial of any kind. When you plead innocent, you have to mount a legal defense. There isn't one. So, yes, he's guilty of breaking the law. But, that doesn't mean he should be charged and convicted under that law.