To exit the boundaries in Photo mode, beat a race and then save the replay. Load the replay and select "Restart". Press "Pause" on the tool bar. Choose the "Drive Past Cam" camera view. Wait until the replay moves the "Drive Past Cam" out of the track boundary and then select "Pause" on the toolbar. Then, select "Photo mode". You will be able to move the camera freely, outside of the track boundary. Once you move back inside the boundary, you will be stuck inside again. You can move through solid objects and see unfinished areas with this trick.