I had the impression that the whole "control" room was nothing but show. Estimating the travelling times of a radio wave, nobody on earth could have had any control about the spacecraft, and none of the engineers in the control room could have done anything other than watch. So if anybody is more involved into the mission than I am ... is my impression correct, or were there actual fallback mechanisms that these peop…
I don't think the control room was "nothing but show." They certainly could have all gone home, but given the time and energy invested in this mission over the last decade, It was importent to monitor the event as it happened even if it cannot be controlled.