I see your point about saying the line,I only watched it once and misunderstood.
The edit is nothing more than misdirection for TV audience(he states he uses misdirection on his shows,maybe not in the way you would expect but misdirection nonetheless),had he edited the base effect I would object.
Well my objections are twofold:
1 - Messiah was not billed as a show where the audience was expecting to be 'tricked'.
2 - even if it was (and the same applies to his normal magic shows) I can't agree with your purist approach to TV editing. Yes he achieves the base effect without resorting to edits (Ie tricks the punter on screen) but then (as in the taxidermist taxi ride and this scene from messiah) he resorts to editing tricks/dubbing to conceal his method and trick the audience as to how the effect was achieved.
This is (I believe) dishonest in a way not in keeping with the normal 'dishonesty' of TV magicians, and the TV editing is always done to one end - making it look like some psychological technique was used to pull off the trick.