And then presumably the other board members read the writing on the wall (especially seeing how 3 other board members mysteriously resigned, including Hoffman https://www.semafor.com/article/11/19/2023/reid-hoffman-was-...), and realized that if Altman can kick out Toner under such flimsy pretexts, they'd be out too.
So they allied with Helen to countercoup Greg/Sam.
I think the anti-board perspective is that this is all shallow bickering over a 90B company. The pro-board perspective is that the whole point of the board was to serve as a check on the CEO, so if the CEO could easily appoint only loyalists, then the board is a useless rubber stamp that lends unfair legitimacy to OpenAI's regulatory capture efforts.