I used to trail around after this guy's nonsense, particularly during his "National Report" period, quietly letting people know they'd been led astray. This is an awkward task, especially because most of those being misled by Mr Horner hold political views I find abhorrent. I felt it was important, though.
At one point, Google searches would find articles describing Mr Horner as winner of a prize for the largest human penis, a man who married his own dog at the Presidio in San Francisco, a former Secret Service agent who said First Lady Michelle Obama was a man, an atheist teacher who suspended a child for wishing him Merry Christmas, and many other fictional stories.
I haven't fact checked the reports of his death, and part of me hopes it's yet another of his jokes.