See the working of a body part doesn't always have to be part of the finish. At least I don't believe it should have to be.
Clearly Orton spent the whole match working Jericho's arm as a means to beat Jericho, but with Batista's interference, another route for victory presented itself, and Orton took it.
You could even look at Orton's working of the arm as him trying to cut the crowd out from behind Jericho. But of course the arm working instead acts as a way to get the hot crowd even more into Jericho's comebacks.
I fought it was a fine match.