I'd swear I saw that posted elsewhere on these forums not long ago, and I had to post in response to it then, and must do so now.
Again, no matter how credible his sources might be, it continues to make less and less sense for there to even be a prospect of an alliance between Nintendo and Microsoft that would have Nintendo making games for them. This goes completely against the fact that Nintendo has been and is, as of this very moment, pumping time, effort, and money into making a kick-nuts next-generation console, which would not be happening if they were considering pairing with Microsoft. That is, unless Nintendo has been gassed with some kind of chemical agent that made everybody there go completely insane such that they would want to blow as much money as possible for nothing.