Presumably the transmission would have been in the last 9 seconds, I have a PTT on the boom of my headset, there are a number of other locations one can use other than the control column. I concede though I would be fighting to release myself from the seat, rather than transmitting, "unless" it's all over and you know it. there are a number of live examples of that. "oh here we go" and "I love you mum" are two I remember.