Like other posters before me I would want to know in concise terminology exactly how God communicates with them. I believe this issue is at the core of the cult, it's how they claim all their guidance from policy to belief is made manifest.
I believe this is an opportunity to either showcase him as a deliberate deciever or someone who absolutely believes his own lies. Either way there will be those who will regard it as nonsense and those who will still believe him and for the former that's still a win in my book.