Thanks everyone for the advice.
There is one other thing that is on my mind right now, and I wonder if anyone else looked into this. For AVN patients, Dr. Su said his success rate was around 90-92% for the resurfacing. His hypothesis for why it is lower than for non-AVN patients is that a lot of AVN patients have AVN due to alcoholism. When they do not stop drinking after the resurfacing, the AVN continues to progress and leads to failure. For a patient like me where the AVN is caused by a one time event (in my case, likely from steroid use), there would be no progression. This, however, seemed like just a hypothesis that was not necessarily backed up by hard data.
According to Dr. Su, they 'ream' any cysts and AVN changes out of the bone and clean out whatever is left. On the other hand, Dr. Vijay Bose in India apparently has just as high success rate on AVN patients as on non-AVN patients. He has a paper about it, as well as some stats on his website. From reading various postings of his on surface hippy as well as on his own website, it appears that he may do a bone graft procedure during the hip resurfacing, and that this may be responsible for his higher success rate.
Has anyone done any research on this, or better, actually had this procedure with AVN from Dr. Bose?