“Clause has very little to do w/ St. Nicholas. He’s an avatar of Odin.”
Which is basically correct. Santa as we know him today is a composite of sorts, but his oldest (and truest?) form is that of Odin leading his ghostly yule procession through the sky. This older Odin meme is then later overlaid with Christian elements, such as St. Nicholas (who, by the way, is Greek, not Turkish — Turkey didn’t exist in the 4th century), and Sinterklaas stories of central and northern Europe, but many of the Germanic pagan elements still survive surrounding yule/Christmas, such as elves, yule logs, etc.
Interestingly, there’s a similar parallel with the character Gandalf of Lord of the Rings. Tolkien, a professor of Germanic languages, clearly modeled Gandalf after Odin — the “grey wanderer” known by many names — but this is overlaid with certain Christian elements, such as Gandalf sacrificing himself for the Fellowship and then later resurrected (although resurrection is not unknown in Germanic paganism, such as the promise of Balder’s resurrection).
Nonetheless, both Santa and Gandalf both suffer from one irredeemable sin in the eyes of the Cathedral: They’re white. Cathedral’s answer: Dump’em or darken’em.