There is no confirmed tragedy (if you define tragedy as loss of life). In fact, at this point, it looks like a hijacking. One imaginative fellow had them land the plane somewhere remote, repaint it, get a new transponder, then load it with an Iranian nuke, and send it to LAX.
I must admit I find these posts pretty damn funny....
It's not a bad theory, but wouldn't air traffic control need to know about the plane and help it land?