I'd probably say a namechange and a media post about how Vasily moved to another country to help fight against the dictator and his insanity would be showing just as much support for Ukraine.

Then again Its only a 500-600 tpe player so Its not THAT much lost when it comes to time invested. If You feel like this is the right decision then it is. But yes feels a little badly worded that makes the implication that being a loud and proud russian is disrespectful to Ukrainians, but i assume You didn't mean it like it came off to people.

Good luck with the next player!