My favorite detail so far from the theoretical (though highly plausible) assault is that Updyke didn't see his assailant. But he's sure there were more than one of them. Pretty sure Updyke bases this on the concept that it takes more than one mortal to bring down a man of such excellence as himself.
F-baum tweets just now: The one comment that stuck out most to me is that he said that calling into the show was one of the biggest mistakes of his life (that's how he got busted).....but poisoning the trees was not.