TG-
That's an interesting question.
If we accept the premise that Solie was really working for the KGB, then perhaps Solie angled for LHO to be located in Minsk, a little off the main CIA radar screens, but where he was close enough to KGB-Belarus to receive instructions and training.
But I see what you are saying. Maybe Solie only sent LHO to Russia as a dangle, and did not care what happened next.
Maybe, maybe, maybe.