Scene in question : AFTER the "negotiation" scene where Korben (Willis) shoots the leader alien (Mangalore) in the head. Ruby Rhod (Chris Tucker) is receiving a manicure(?) from one of the ship's staff.

If you look closely at the background in this manicure scene you see the priest and Korben looking at security monitors. Ruby screams "OWW" and the footage changes to the priest getting his handcuffs taken off and THEN coming to talk to Korben, and THEN they start looking at the security monitors.

Logically, when Ruby was getting his manicure the priest wasn't even in the same room as Korben nor was he looking at any monitors.

The two footages were put in the wrong order.