With the screws removed from the board, you can now pry the daughter board from the earcup.

Using a plastic pry tool, spudger or tweezers, carefully pry the board up and out of the housing.

Be careful when removing the board from the housing, as the ribbon cable is still attached to the main board. As long as it has been disconnected on the other end, you should have plenty of slack to safely remove the board.