Yeah, turns out it was. Specifically, fractured toe. There's not a lot that can be done but to tape it to the other toe, wear a stiff sandal-thingie for six weeks, and do as little walking as possible. Bleah! But at least it should be healed by AnthroCon.
Let's temper this unhappy news with a pony vid, shall we? Apologies for the DailyMotion link, but YouTube had embedding disabled. :P