Honestly, if this were a real problem, I would expect Doc to handle it. If not Doc, KG, whom Rondo seems to respect a lot. If not KG, then Dooling. But as Doc seemed to not mention this much, much less design the offense around giving the ball to Rondo, I don't think calling him a "Ball Hog" is very fair treatment.
Maybe Doc should have designed the offense differently, or maybe players should have done a better job of getting open, or creating more when they had the ball, but Rondo wasn't Ball Hogging it in the way that you imply.