I can’t wait to read the autobiography of involved parties.
It's probably more of an intellectual / philosophical position, given that they just did not think through the real impact on the business (and thus the mission itself)
I'm inclined to assume that something stupid was done. It happens. They should resolve it, fix the rules for how the board can behave, and move on.
Despite the bungling, Ilya is probably still a good voice to have on the board. His key responsibility (super-alignment), is a key part of OpenAI's mission.
The communication was certainly very poor, and we don't know if the reasons were good, but I don't understand the speed complaint.