EMPLOYEE WAS ATTEMPTING TO REMOVE A 962 FRONT END LOADER WHICH WAS STUCK IN THE MUD. WHILE GUIDING A 972 FRONT END LOADER BACKING UP TO REMOVE THE 962, EYE CONTACT WAS LOST BETWEEN EE & THE 972 LOADER OPERATOR WHICH RESULTED IN EE BEING TRAPPED BETWEEN BOTH COUNTER WIEGHTS. EE BEGAN YELLING WHICH MADE THE 972 OPERATOR PULL UP.