Once they were in-country, it doesn't sound like it was voluntary. Guy thought he was getting a chill security job at an unrealistic pay point. Clearly not the smartest, but he didn't move to Russia to join the army. Just like Pakistanis don't move to Saudi Arabia to be enslaved.
In both cases, the word is out and these people should have known better, but maybe they were desperate, or naive, I think we can have a little human empathy.