I did file a scam accusation in the end..

Please get in touch with me if there is any new info regarding its evidence that he actually got spooked for a reason or if fbi got thier hands on any info from servers.
Personally, if he came back now and gave back coins and opened a new tumbler, i would use his service..
Best action has been done but I suggest to move on for that matter although it's quite depressing to lose money for this things but we should know the risk and learn from it. But if he came back and pays then it's good but if not better think that you lose so that you will not depressed from those incident.