Kirk wasn't being mutinous as far as I can tell. They should have worked together, but Spock, pissed over the kobayashi Maru, decided not to do that and simply silenced the other voice.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist