I'd noticed that too. If it was to do with Legolas and Aragorn trying to negotiate with Haldir, then why didn't they show 'Gorn?
I'd have preferred it if they showed Boromir in his place. I don't think the Boromir heel turn (wrestling terminology
) was subtle enough. I liked the scene on Caradhras where he picks up the Ring (which Frodo dropped....how exactly?) but I didn't like Galadriel's line -
He will try to take the Ring - or Boromir's mad snuffling on the boat which, conveniently, only Frodo noticed. A bit forced, but it was still alright.
Maybe the Legolas shot was designed simply to get more Legolas in the film. Because he's
hot stuff. 
Might just be that.