I never heard that story before. I'm assuming it is a very bad joke. I am assuming someone else will proceed with the telethon (maybe one of his kids?). It certainly is a worthy cause and his celebrity did bring it more to light so hopefully another big name will follow suit.
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK