Either the board leaves, or Altman does, and this time presumably, for good.
When Altman was unceremoniously fired from his position, Brockman resigned in solidarity, and this triggered a slew of high ranking officials at OpenAI to follow suit. This led to more backlash towards the board, who seemed to switch to damage control to mitigate some of the anger.
Altman, who has emerged the winner in this ordeal, has open stated that he is open to a return, only if the board resigns as a whole and a few more changes are made towards the governance of the company. It remains to be seen what comes of the whole situation.