A simple crude low bandwidth video of the FD, say 1 frame per second, not 30 or 60 as TV or movies, could aid the sensitive audio feeds and in this case could help vindicate the FO if it showed him slumped over, suffering, etc. We're prolly videoed 100 times driving to work every day, what's one more... No one likes to be videoed, but we all suffer through it daily. Sometimes it helps us, sometimes it convicts us, but it usually doesn't leave us guessing what happened.