No one has ever gotten in with a 27 MCAT. You are doomed.
(I am completely kidding -- sorry, baklava makes me a little giddy)
A 27 is doable, but I think you need to be pretty amazing in all other respects unless, as Mobius mentioned, you happen to be from a state with a fairly forgiving state school system. I don't know if that is the case with Ohio. Your GPA seems very good, and your ECs seem to be solid. Did you apply to all the Ohio schools? While your MCAT isn't stellar, I don't think that that is the major issue for you -- you seem to have gotten multiple interviews, and all of those places knew your scores before you applied, so you obviously have a fairly compelling application. So I'm not sure what's going on with the wait-lists... it could just be one of those unfortunate and sucky things.
If you do end up reapplying, I would definitely include some osteopathic schools, because I think they'll love you. Your 27 is right around the average, and frankly your grades are way ABOVE their average, so I wouldn't anticipate any problems there. Apply broadly to allopathic schools as well -- again, since you got interviews, they must think you're worth interviewing!