TBH to me, reading the comment about the one-off GNR and STP reunions, it seemed like an off-the-cuff thing, rather than some sort of masterplan to reunite with Axl because it looked like VR might implode.
See, this is where I think you're wrong.
I just can't see Slash, knowing that GNR have a current line-up (different now than then obviously), would reasonably expect Axl to just fire everyone and reunite with the AFD or UYI members, given the problems they had working with each other, just because it looked like VR might be disintegrating. If he did, then yes, that would be very dumb on his part, but I just have never got that impression from him.
The fact that news sites report it as "SLASH WANTS GNR REUNION NOW OMG" doesn't help either....