perhaps i'm wrong but this isn't the way that i understand it. each state (i think all of them...) have osteopathic licensing boards (not AOA) that license osteopathic physicians. however, in the 5 states listed those licensing boards, by law, cannot grant licenses to practice medicine without a completed rotating internship or a pass from the AOA accrediting the first year of whatever residency they did as equal to the rotating internship. i don't get the feeling really that the AOA has oversight over individual licensing boards.
this is from arizona law (it was the first one that popped up in google):
at least for them, it doesn't seem that the AOA has anything to do with it. the licensing board is comprised of DOs and other people appointed by the governor of the state.
there are functions within the AOA for which you have to complete the rotating internship, but you will be licensed by a state osteopathic licensing board without it.
and from those i know who have gone through it, having your PGY-1 year approved isn't that hard anyway.