PERSON WAS STANDING ON RELAY BAR FOR #4 SUPPORT OPERATING BOAT WINCH FOR TEARDOWN SCREEN. WHEN #4 PUSH VALVE WAS ACTIVATED RELAY BAR MOVED TO PUSH PANLINE AND PERSON'S FOOT WAS CAUGHT BETWEEN RELAY BAR AND PANLINE BRACKET CAUSING CRUSHING INJURY TO RIGHT TOES. PERSON LOST PART OF TOE ON RIGHT FOOT.