Scoop: theinformation.com
You don't really see any of this in most professional settings.
You are interpreting that as hostile and aggressive because you are reading into it what other boards have said in other disputes and whatever you are imagining, but if the board learned some things not from Altman that it felt they should have learned from Altman, less than candid is a completely neutral way to describe it, and voting him out is not an indication of hostility.
Would you like to propose some other candid wording the board could have chosen, a wording that does not lack candor?