Mike seems to have the same worries that I had when I rejected Tau Press. Our concerns were first for readers and advertisers.
Editing AU needs a massive amount of support and changes that only ownership of the magazine can command; I'm not surprised that Mike has left - in fact now is the time I expected him to go. We could do without AU (there are other magazines out there) but we need an 'off the shelf' mag and AU is the only one.
Welcome to the club, Mike!