I think IAM didn't need to be so fervent in their support of Nikolaj, absolutely. I'm sure it's part loyalty, disbelief in who he is, etc. Also, Marie France & Patrice are not so young to avoid bad attitudes about Sexual Assault. (And I've had at least two friends tell me it's a "Quebec thing", which...)
I also think coaches stay loyal to their students pragmatically as well, when it's in the investigation stage. It's a question of do they lose more potential students by staying loyal, or by tossing out the accused? In skating, I don't know the answer regardless of what I think it should be.
To me, the IAM of it all underlines how things need to keep evolving in skating, and I think this decision by OSIC is a step in the right direction. Canada and the US are maligned for not taking things like this seriously enough, and it's fair. But other Federations/nations in the ISU are much worse, and I'm not talking small ones. This school was considered a step away from the North American Russian schools, where all sorts of stories have come out about partner abuse, etc. And it turns out, it wasn't enough of a step away.