I've read how to set the trap for him, but right after the little cutscene of indy yelling at him, he's nowhere to be found, can anyone help me with this?

well you dont need to know where he is at that point, but what u need to do is go to where the block is. now push the block in the passage way (in the center). now run to where youll see a marduk statue. push the statue so that its lined up with the exit (it does not matter which side u block). now youll see volodnikov traped there, and he gives u the bronze part!