Im too suprised that nobody has contact with bitblender admin, of course there is someone in here that knows him!
I put the feelers out and spoke to someone that had an intimate convo with Blender while the site was still up. Apparently, a few months ago he was paranoid about BestMixer and was deciding whether to shut down. Obviously, he waited it out and gave way too little notice knowing he would be able to exit scam any remaining coins. There is someone here that has knowledge of him and most likely a way to correspond.