There is one thing that I have thought of, but it's only wild speculation. I may have mentioned it before.
I have heard before that people who wanted a band to play together again may just announce something hoping that the band will fall in behind it.
While we've heard 'confirmed by close sources' etc., it's not beyond the realms of possibility that a 'close source' person, who could even be Irving Azoff, is being manipulative. I.e. playing up a rumour (which he may or may not have started himself) in the hope of getting the remaining guys back together again.
I'd start believing that it could happen if I hear an actual Eagle confirm it. But for me to really believe it will happen, I want a statement from Don H.