WAS TRAVELING APPROX. 50-55MPH AND WENT AROUND A CORNER; ROAD HAD UNEVEN SHOULDERS. TOOK FOOT OFF ACCELERATOR PEDAL, AND VEHICLE ACCELERATED INTO A DITCH. NOTICED AND TRIED TO CORRECT, AND VEHICLE HIT DITCH AND CRASHED. AIR BAGS FAILED TO DEPLOY. DRIVER WAS HOSPITALIZED WITH AN INJURED BACK, CRUSHED 2ND VETERBRAE. *AK