Sounds like fraud to me.
TIElniff, which is it? Is he lying now that he never wrote or even read the newsletters sent out for years (and not for free!!!) with his name on them, or was he lying then and the newsletters that people paid for thinking they were written by him really written by someone else?
There is no third alternative explanation; other than he is going senile and doesn’t know what he’s saying and has lost his memory.