I've read things that say MAs are turn offs for certain programs (at least in clinical) because some programs like to train people all the way through. It sucks, I'm sure.
Did you hear from USF and Drexel directly? I applied to both of those, but I haven't heard anything from either program, which kind of freaks me out (but also not knowing means I can continue to live in ignorance of what is probably impending rejection...)