That has to be what was going on. It's pretty much the only time AJ has missed anything. Those are the most hideous dresses Rarity's ever made (and they were never used and she didn't care.) Nopony, excepting Twilight and Rainbow Dash, gave a single crap about what was going on. We'd seen Fluttershy try to fly fast before. She didn't. And she kept fumbling the horseshoe, like, constantly.