I'm leaning towards there not being a good reason that doesn't expose the board to immediate liability. And that's why they're keeping mum.
Altman predates every other board member and was part of their selection.
As an alternative faming, Maybe this is the best opportunity the cautious/antripic faction would ever get and a "moment of weakness" for the Altman faction.
With the departure of Hoffman, Zilis, and Hurd, the current board was down 3 members, so the voting power of D’Angelo, Toner, McCauley was as high as it might ever be, and the best chance to outvote Altman and Brockman.
Maybe the remaining board members could see the writing on the wall and wanted to save their own seats (or maybe he did move to coup them first and they jumped faster).
Either way, they got outplayed.
I wonder if there were challenges and disagreements about filling the board seats. Is it normal for seats to remain empty for almost a year for a company of this side? Maybe there was an inability to compromise that spiraled as the board shrank, until it was small enough to enable an action like this.
Just a hypothesis. Obviously this couldnt have happened if there was a 9 person board stacked with Altman allies. What I dont know is the inclinations of the departed members.
Good primer here:
https://www.onboardmeetings.com/blog/what-are-nonprofit-boar...
At least that will create some common reference.
Edit: it is also common for changing circumstance to bring pre-existing but tolerable differences to the relevant Forefront
These things are all about balance: can we do it? do we have to do it? is there another solution? and if we have to do it do we have to do it now or is there a more orderly way in which it can be done? And so on. And that's the sort of deliberation that shows that you took your job as board member serious. Absent that you are open to liability.
And with Ilya defecting the chances of that liability materializing increases.