Per my original HN post last night which broke the story [https://news.ycombinator.com/item?id=8124119], I still think that he gamed the system. If I remember correctly, he asked mTurkers to create a Stellar account _without_ an identifiable account name so the transaction couldn't be easily backtracked. Also, he did not use his real name in mTurk and impersonated someone else. Not sure if his actions violated the ToS.
It was right for Everett to have come forward and disclose his means. His suggestions to improve the system are excellent. It will improve the Stellar system for everyone involved. Nevertheless, I believe that he should donate his balance to a charity. It will be an honorable thing to do.
Sandro