EE HAD BEEN WORKING ON A WINDSHIELD WIPER ON THE #8 LOADER. AS HE STARTED TO DISMOUNT AND WAS DESCENDING DOWN THE BOARDING LADDER, HIS FOOT GOT CAUGHT INBETWEEN THE RUNG SPACING. WHEN THIS OCC URRED, HE SOMEWHAT SLIPPED CAUSING HIS WEIGHT TOSHIFT AND WHILE REGAINING HIS BALANCE HIS ONE ARM WAS MAINTAINING HIS WEIGHT AND THEREFORE STRAINED HIS NECK AND SHOULDER.