This was one of the more frustrating spots for me at first too as I was trying to get to that ledge after the second statue. Turns out that thing is a "red herring", so to speak- ignore it and jump from the second statue to the ledge that has that pushable statue. Leave it right where you had it to get to the boards blocking the statue before and climb up to the small ledge. You can jump from there onto the third statue's platform and to the exit on the other side as it is sliding back in.