To me it seemed like Altare was buthurt that how could Vesper do this to him, for geting suspended right before the 6 month anniversary. It always seemed like the "leader" role went to his head.
That they were on bad terms was echoed by Axles "momy and daddy are fighting" comment at the time.
Axle seemed to not want to get involved in anything, but didn't like the situation while I woudn't be surprised if Magni stood up for Vesper.
The Altare hogwarts ally thing seemed unsencere from him. More of a "it's not worth the truble to play on stream" than anything else. From all the things he'd likely get buthurt from I doubt it would be that.