Hi Jake,
At the time we ran aground, and we knew we were about to run aground, we had just been hit by a 20+ knot puff and the windward hull was flying high. Eric had the tiller cranked over hard making the boat bare off. The impact with the bottom loaded the rudder blade sideways rather than fore and aft and it simply folded sideways like there was a hinge in the blade along the bottom of the rudder head. The boards and rudders on this boat are all original, 21 years old and built with 1981 construction materials and methods. Todays boards and rudders are much stronger and lighter.
Bill