I think another important question is whether it will help his plea if he gives them the keys: He appears to be just an average shmo (no surprise) and I'm sure

I think another important question is whether it will help his plea if he gives them the keys: He appears to be just an average shmo (no surprise) and I'm sure would be happy to give away his privkeys for a few years off of his sentence. The other question is then whether the FBI would then liquidate the coins via an exchange, or just sit on them.