EMPLOYEE WAS ASSISTING FELLOW EE LIFT A PIECE OF TUBE STEEL APPROX.6'LONG UP ONTO A PAIR OF SCATES USED FOR MOVING HEAVY LOADS, EE LOST HIS FOOTING/ BALANCE BUT RE-GAINED CONTROL TO FINISH THE LIFT BUT IN TURN PUT HIMSELF IN A SOMEWHAT TWISTING POSITION WHILE STILL MAINTAINING THE LOAD ALONG WITH THE FELLOW EE.