I think talking about it here is useless.
This issue needs to be brought to the Korean boards for more resolution, or if they have more information about Sprit. Another thing to inquire about is if he ran the same GB over there, and if he did, then what that GB current status is. . Only there can people give advice about how to contact the relevant Korean authorities. For example. If someone scammed me in the US and I had their name, number, and address. I would contact their local sheriff's department for more information on how to best follow up.
So now let's get a list of who has access to what board. The major Korean boards are OTD, KBDMania, KBDLabs, and Winkeyless. I'll start, I have access to KBDLabs.
If you have an account on any of these boards, or if you are fluent in Korean please let everyone know. That way we can at least make a forum post, in Korean, inquiring about the whereabouts of Sprit, and ask if any members there have more information regarding him.