"Out of Detent" meant the stick had moved away from its centered position; it was spring-centered like the turn indicator in a car.
"ˌaʊɾəv dɪtˈɛnt" mˈɛnt ðə stˈɪk hæd mˈuːvd ɐwˈeɪ fɹʌm ɪts sˈɛntɚd pəzˈɪʃən; ɪt wʌz spɹˈɪŋsˈɛntɚd lˈaɪk ðə tˈɜːn ˈɪndᵻkˌeɪɾɚɹ ɪn ɐ kˈɑːɹ.