They had postings for EN3 before they started looking for specifically male talents. It seems more likely they just had trouble finding people for EN3 before Stars EN (which they actually found TOO many good people for) and decided to focus on them first, which I think was a good idea, since it was a new branch.
The fact that pretty much every girl in EN has generally had a much better vibe this year than last year really leads me to believe he was shitcanned not long after Tempus HQ debuted. While things aren't perfect, they are extrodinarily better than last year, where it was like a daily ocurrance to get Calli, IRyS, or Kiara to complain about something with management.
They clearly had some form of restructuring because they switched to a 1:1 manager to talent ratio, which seems to have improved things quite a bit.
Also, the Omega = Altare rrat is incredibly stupid. I have detailed why before, but search is broken still, I think. The only related rrat that was almost certainly true was Ao-chan being Sana.