A MOTORMAN WAS COUPLING A CAR TO A MOTOR. THE COUPLER WAS SLIGHTLY LOWER AND HE USED A ""DISCONNECT BAT"" TO RAISE THE COUPLER WHILE ANOTHER MOTORMAN COUPLED THE CAR. WHEN THE COUPLERS CONNECTED THEY WERE MISALIGNED AND THE BAR HE WAS HOLDING SWUNG INTO THE CAR CATCHING HIS THUMB BETWEEN THE SIDE OF THE CAR AND THE BAR.