Perfect occasion to start working without stirrups! With a broken toe I cant 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!
It actually felt way better to ride than it did to walk! I haven't worked yet withought stirrups, this was my third lessong (it only lasted half an hour because I got stuck in traffic -and lost- and was late) but when do you start working without stirrups? She and I were actually talking about riding bareback and she seemed pretty interested in using that once I 'master' posting.