> It’s a union gig ... <
I don’t think that’s true in this case. Principals - and other administrators - are usually not members of any union. This guy might be a member of some principals’ association. But such associations are rather toothless.
It’s more likely that this is just a case of individual school administrators looking out for each other.
...yet another in a crowd of sometimes less than worthless “educators who abuse children intellectually .