I think we should let him be in his "fantasy" land, people like Craig is a pathological liar so no matter what people do, he will won't back down or simply admit his lying.
For sure, majority really knows what personality Craig has and won't simply believed those exorbitant claims, like he is Satoshi. Maybe those beginners might, but they will soon realised their mistakes and move away from him.
I don't understand why people pay attention to him at first place. Sharing his thoughts and views is an extra pronotion for him and that is bad, thus we are only making him a favour. Just ignore him and I beleive there are authorities who will take care of his case and treat him.properly.