I’m not aware of that. Source? I was looking for something about this and all I found was an article saying he should speak up about the war. Which seems to ignore the difficult position he’s in where he can get murdered by the Kremlin easily. We know this happens in Russia all the time. Even despite that, from the article:
On February 16, 2022, Snowden wrote: “’Russia should not invade Ukraine’. The reason I don’t say it more is because it’s a non-statement: everybody agrees with it, even Russians. The only people who think slogans solve the problem are people who don’t understand the conflict.”
Also, you’re actually suggesting he was aligned with Russia from the beginning and that’s why he went there?