If you look at the evidence, it all points to this. Gase gets hired and:
Mehta hit pieces.
Lucas mouths off.
If you look at Gase sideways, you are out. He's Don Corleone. He's got his wartime Consigliere in Elhai. He's got his Neri in Douglas. He's got his Fredo in Williams; (watch for the fishing trip this week or next).