I think that a pre existing weakness is pretty likely, and what triggered the failure might be hard to pin point. Brad talked to Tom Haberman today, and he speculated about a compression failure. It's a complex engineering project, a mast this tall with this small an extrusion.

I'm 160 lbs, and I'm guessing that Lacy is only about 80 lbs. Brad and Matty were on the lee hull to facilitate the hull flying fun.