Brains are funny things. For a long time, Scott Adams, the guy who pens "Dilbert", got Spasmodic Dysphonia and couldn't speak for over a year. Later could only talk verbally in rhymes, and this was part of his own therapy to restore normal speech.
So like anything, it could be a hoax, but keep an open mind (no pun intended).
Maybe that's the Rev Jesse Hijacksuuuun's problem too.