The ceiling wires lifting the Lunar Module, suddenly stop and jerk the Lunar Module to the right, then continue up slowly.

The FL(Fake Lift-off) stagehand says from :08 "Flight-FL, if it puts you down, the ah LEM(Lunar Module's Explosive) charges are still cleared for the orbit, we've got ta finish to establish the timers, ok."
Flight replies "Ok".

At :40 the special effects explosive charges on rigged set timers, are heard detonating(even though in a vacuum, as on the Moon, no noise should be heard), pieces of the Lunar Module are seen exploding straight upwards and outwards.

Without exhaust smoke or a flame, the top part of the Lunar Module is lifted up by hidden wires from the ceiling in the Fake Moon-Set Studio Bay. However as seen at :41 the ceiling wires lift stops and pulls the Lunar Module to the right then continues up slowly until out of view of the camera at :45

The Astronaut in the Lunar Module is heard asking at :50 "What? It still was on-line?"(Straight up). Flight replies with a quick surprised tone at :52 "We saw Liftoff!"

This video as you hear & see it, is located for download at NASA site:
http://history.nasa.gov/alsj/a16/video16.html
Apollo 16 Video Library
Return to Orbit
Journal Text: 175:04:05 RealVideo Clip: (3 minutes 32 seconds)FL speaks to Flight at 3:18 Time-Marker
Journal Text: 175:29:50 RealVideo Clip: (3 minutes 1 second)
Journal Text: 175:32:52 RealVideo Clip: (2 minutes 4 seconds)

NASA did redacted editing & cleaning up of the text, to cover what they really said in the written records of the Astronauts conversations. Also in some video's NASA has later recorded different conversations, replacing what was originally spoken.

ALL NASA FOOTAGE USED IN THIS FILM IS PUBLIC DOMAIN.