Simple sail under main alone to check that all lines run and sail is working well. Main got stuck about 3/4" of the way up the mast, perhaps at a batten holder and its track slide hitting a joint in the track.
Winds blowing down the Severn from very light in the harbor to 10kts out past the Academy. GPX formatted track . Estimate distance: 1.72nm, estimated average speed: 3.0kts, estimated duration: 0:34