I've heard about similar situations. In fact, there are a few posts on this forum where it was stated that Russian women who applied for naturalization cleared the name check without a problem, while their husbands got stuck. I don't know if you've seen my post about a friend of mine who got stuck in name check, so here's the story, in case you haven't read it. She applied along with her whole family (parents and a sister). The parents and the sister have already taken their oaths and gotten their passports. Since taking her fingerprints, my friend hasn't heard anything from the USCIS. Situations like that only prove that the name check is a mystery as big as the Black Hole.