As Kiandra said, the statue is indeed static. However, there is a way to turn it into an entity which you can toggle it's state:
-Go to the model editor. Then, open the statue.
-Create a body, feel free to change it's properties (except mass, this one must be 0), and make it match the statue (like a Bounding Box):
http://en.wikipedia.org/wiki/Minimum_bounding_box
http://www.gameit.es/wp-content/uploads/...ng_box.gif
-Go to view<Outline and make the body the parent of the statue (polysurface, or something like that)
-Then, go to User Defined Variables. Set it to Object<Static
-Save it as "mycreepystatue" or whatever you want, note that it MUST have a different name than the original or things will happen. As I said. Save it in "YOURCS<entities<mycreepystatue (again, whatever you want)
However, keep a copy of it in the original entities folder, so you can access it from the level Editor.