EE WAS RIDING IN A RAIL MANTRIP. AS IT WAS TRAVELING UP THE SLOPE, THE MANTRIP BECAME FOULED ON THE SLOPE FLOOR. THE PASSENGERS GOT OUT TO DETERMINE WHAT CAUSED THE TRIP TO FOUL. HE WAS STANDI NG BY THE MANTRIP WHEN THE OPERATOR OF THE TRIP WAS INFORMED THAT HE NEEDED TO BACK THE MANTRIP UP. WHEN IT BACKED UP, HIS FOOT WAS CAUGHT BETWEEN THE SLOPE FLOOR & THE BOTTOM OF THE MANTRIP.