RedactedNarrative: Vessel was operating at about 55 mph on Lake St. Clair when vessel suddenly turned left without driver input.  Vessel then rolled and landed upside down.  Vessel was equipped with a watertight canopy and both occupants exited through a hatch on the underside of the vessel.  
  
  A good Samaritan witness #1 assisted and began towing the vessel with both occupants still aboard it.  Deputy arrived on scene and attempted to remove the victims but they refused stating once they let go they would slide into the props.  The tow line broke and both went into the water and were pulled out onto police boat #5.  The vessel was towed by Tow Boat US.  The vessel operator sustained a head injury and lacerations, and refused transport to a treatment facility. 