Perfect occasion to start working without stirrups! With a broken toe I can't imagine it would feel good to work with stirrups. Years ago I rolled my ankle the day before a show. During the flat classes I always kept the side away from the judge out of the stirrup, because it hurt so much. Luckily the rest of the classes were without stirrups anyways so I was ok.
Stirrupless work sucks, but you gotta do it!