I did a bit of digging into the John Denver urban legend and discovered something quite different from the official version. Apparently what really happened was that some Witnesses were at a John Denver concert many years ago and he was going to be doing some patriotic songs during the concert. He knew that at the time, his concerts were attended by Witnesses and he kindly suggested that, rather than them being offended by what he was playing, he gave them the option to leave and get fully refunded.
Of course, this spread like wild-fire in Dub-dumb land and before you could say 'Jehovah', the story was that John Denver was obviously in contact with Satan and he could 'feel the presence' of Jehover's peoples and ordered them to leave.
Naturally this was never questioned by any Dubs. The other ridiculous story of John Denver supposedly admitting to Johnny Carson on The Tonight Show, that he hated Witnesses and Johnny Carson ordering him off the stage, has never been proved. There's no clip from the Tonight Show that has ever been produced showing this---it's just another stupid, ridiculous piece of the Urban Legends that Witnesses seem to thrive on.