Unity 5.2 Oculus Rift Freeze camera motion

Is it possible to turn off head tracking in the Oculus Rift in Unity 5.2? I still want to render a scene stereoscopically, but I don't want the player to be able to turn their head.

I've tried 1) making the camera static, and 2) adding a script that reset the position on every frame, but neither of these things had any effect.