He doesn't need to worry anymore. I am fairly sure that throughout the years he has done a tremendous job in converting a large portion of his tainted coins through private sales. If he is a fiat multi millionaire already, with on top of that his own regular crypto stash, it very well explains why he is no longer that interested in Bitcoin itself, and probably never has been, especially so if you look at how much damage MtGox inflicted on this market back then. He used Bitcoin to get what he wanted, and might be looking for a new toy soon. I wouldn't even be surprised to see him pop up launching his own fork at some point in the future. I'm afraid that this criminal will continue to harm this community....