The student pilot reported that during the landing roll he heard something fall in the back seat. He looked back; when he looked forward again the airplane had veered to the right. The student pilot attempted to correct with the rudder, but reported that he "overcorrected" to the left and then to the right, and then "hammered" on the brakes. Subsequently the airplane skid off the runway to the right and impacted a ditch. The airplane sustained substantial damage to the left wing.

The pilot reported that there were no pre-impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.