Trying to get past the room with the four statues that need to be turned. I have turned them to face center of the room but nothing happens

Even left the fort...came back another day and went all the way back, killing all in sight, and then turned the statues 360 around, just in case. Nothing seems to work. Is this a bug or am I doing something wrong? All four statues are facing towards the center of the room, i.e. towards the circle that is on the floor. Any suggestions?