It seems he will become an AI after the third turn of stalling, rather than the second as implied above somewhere. Right now the status page shows everyone but him as having completed their turns, but it still seems to be waiting for him.
This may depend on game setup - making him ai may need to be done manually.
I vote to ai him rather than sub. Normal ai? I don't think people know their neighbours yet so not a big issue. And last human player alive wins I say. Everyone agree? Let's get this resolved so we don't have to wait 48 hours for every turn.