C'mon people. How many "former" KGB agents do you know go completely legit and not have some ties to the Kremlin? Unfortunately, their track record with former spies is pretty well documented.
Once an agent, always an agent.
Once an agent, always an agent.
I'm not saying he's still active, but those relationships are for life, and you don't just walk away from the KGB/FSB unscathed. Just ask Alexander Litvinenko.