FollowOrientation for Yaw Only?

Is there a way to make FollowOrientation affect Yaw only?

I tried editing the FollowOrientation code to only look at the .y/.yaw values. Results were disasterous- orientation was jittery and only semi-worked when degrees were not near 0/360. Maybe worked from 90 to 270 degrees, sort of.

Original code:

		// Get our initial world orientation of the cameras from the scene (we can grab it from
 		// the set FollowOrientation object or this OVRCameraController gameObject)
		if(FollowOrientation != null)
			OrientationOffset = FollowOrientation.rotation;

I tried something like this (don't have it in front of me currently):

		// Get our initial world orientation of the cameras from the scene (we can grab it from
 		// the set FollowOrientation object or this OVRCameraController gameObject)
		if(FollowOrientation != null)
			OrientationOffset.Yaw = FollowOrientation.rotation.Yaw;

Is there a good way of doing this?