Of course, it's just a sample size of one, and the 4th Q of a game where Miami let up a little bit, and Lebron was out....
Having said that, Barbosa should be in the rotation: Rondo/Lee/JET/Barbosa should all see time. That's a nice 4-some, which becomes a crowded 5-some when AB comes back, at which point, Doc has a nice problem, i.e. an over-crowded back-court. It could well be that one (or even two) get moved at the deadline for a talented front-court player....