What was found
(CAN) AFTER LIFT OFF THE CREW EXPERIENCED A LEFT WING DOWN ROLL, AND INPUT OPPOSITE WHEEL FORCE TO CORRECT. AN EMERGENCY DECLARED AND AIRCRAFT LANDED OK. ON GROUND THE CREW NOTED THAT THE LEFT HAND INBOARD ROLL SPOILER INDICATION ON THE PFCS INDICATOR, SHOWING SOME UP DEFLECTION. GROUND CREW CONFIRMED THAT THE LH INBOARD ROLL SPOILER ACTUATOR WAS JAMMED IN THE MID POSITION AND WOULD NOT RETRACT. ACTUATOR SENT TO DOWTY FOR STRIP DOWN.