All the Tape-Gate and who's in/who's out speculations aside, has anyone ever considered that...
Maybe Augeri was ready to step-down, for whatever reason he might have, and this turned out to be the perfect opportunity???
It is kunda strange that, with all the threads dedicated to him and constantly updated over at BT, Augeri nor his wife has replied at all. Maybe that's because, not only is he really healing up his voice but, he's contemplating his next venture and just waiting for the right time to come public with it??? Maybe he thinks his time with Journey has given him enuff leverage to get Tall Stories revved up again. Hell, there just might really be a TS's tour planned for next year.
It's just with all the silence and generic "Official Statements", it is possible Steve decided to leave the band on his own and, to save face AND ticket sells, he and the band are going to let this linger on until this current jaunt is finally over.

The things that make you go Hmmmmmmm....