Axle hangers. What? Yup, the axle hangers were damaged when the trailer was stolen, which would explain the brakes acting funny. Ok, to the shop then.
The concert this year was at Mohican Sun in Uncasville. A few calls later to determine the camping policy, (Not as friendly as I'd like) I decided that the trailer would not accompany me to the concert this year. All in all, a very slow camping season.