This is really no shock based on the way he moves his horses up. It\'s impossible to know who is giving what to their horses, but Dutrow\'s \"move ups\" typically come after he lays them off for a couple of months and works with them for awhile. To me that always seemed like a combination horsemanship and steroids because he rarely turns a horse around after a week or two. I said that here a few years ago and this reinforces my opinion. Plus as we see from Eight Belles, not eveyone uses steroids to the same degree.
Of course he may be doing other things too.