Geoff Peterson wrote:
Spock falsified orders in "Amok Time" and Kirk then compounded that disobeying Komack's orders by going to Vulcan. By the end of the episode Komack gives the okay to proceed to Vulcan, but the Enterprise is already there. Did Kirk fess up to that?
Oh, that's small potatoes compared to Spock hijacking the Enterprise in "The Menagerie." And let's not forget him using a nerve pinch on some poor security guy in order to take an unauthorized spacewalk in TMP, in which he had a secret agenda to make contact with V'Ger for pretty much the entire movie . . .