Some of the non 'K' readers may not know the SOP for airdrop. It was to drop on the lights (red/green) and if no lights then drop on the intercom calls that were concurrent with the lights.
If no intercom no drop. Thus the Loadmasters who dropped on the calls from the flightdeck were carrying out the correct procedure. Hence ksimboy's temptation to use the extractor parachute manual release handle and let the load go. On training sorties an experienced Loadmaster could sift the intercom chat but on an op drop the organised chaos down the back did not usually afford such luxury.