Trivia incoming:
As a close follower of Soviet block countries, I can assure there has been no "repatriations" as you put it since Soviet union broke up. Yes some players have started to play for their birth lands, but not after playing for Russia. The only real example of a player who has suited up for two post-Soviet countries in an IIHF tournament of any age is Evgeni Nabokov.
Denis Falfutdinov managed to play Kazakh U sides ~15 years ago, but later on appeared for Kyrgyzstan's team in Asian Winter games couple of years ago. Just to be thorough, I'll also mention
Yevgeni Pisarenko who turned back to, funny enough, Ukraine and now represents Romania, and if I recall correctly scored their only goal against team Ukraine when these two teams met last time.
Not sure if I'm awesome or really, really sad for remembering all this (besides Falfutdinov's full name) without any reference.
So "repatriations" of babchuks and komaristys of this world seems very, very unlikely.