I'm calling bogus on that one. Sorry. Only an instructor who didn't know what he was doing could ruin Bubba, and the only instructors who would not consider taking him on are the ones who are too busy and/or who are not confident in their skill set.
If Bubba took a lesson, it's the same as any other student: find his priority piece, and make it better.
FWIW, I'd teach Jim Furyk or Bubba Watson. The same day, too, why not? :)
You might, but I've heard Haney say he wouldn't. In looking at video it doesn't appear Bubba even maintains a steady head through his swing, so he's missing the first key