Is Toggling Positional Tracking Broken Again?

using UnityEngine;
using System.Collections;

public class FakeTracking : MonoBehaviour
{
	public OVRPose centerEyePose = OVRPose.identity;
	public OVRPose leftEyePose = OVRPose.identity;
	public OVRPose rightEyePose = OVRPose.identity;
	public OVRPose leftHandPose = OVRPose.identity;
	public OVRPose rightHandPose = OVRPose.identity;
	public OVRPose trackerPose = OVRPose.identity;

	void Awake()
	{
		OVRCameraRig rig = GameObject.FindObjectOfType<OVRCameraRig>();

		if (rig != null)
			rig.UpdatedAnchors += OnUpdatedAnchors;
	}

	void OnUpdatedAnchors(OVRCameraRig rig)
	{
		if (!enabled)
			return;

		//This doesn't work because VR camera poses are read-only.
		//rig.centerEyeAnchor.FromOVRPose(OVRPose.identity);

		//Instead, invert out the current pose and multiply in the desired pose.
		OVRPose pose = rig.centerEyeAnchor.ToOVRPose(true).Inverse();
		pose = centerEyePose * pose;
		rig.trackingSpace.FromOVRPose(pose, true);

		OVRPose referenceFrame = pose.Inverse();

		//The rest of the nodes are updated by OVRCameraRig, not Unity, so they're easy.
		rig.leftEyeAnchor.FromOVRPose(leftEyePose);
		rig.rightEyeAnchor.FromOVRPose(rightEyePose);
		rig.leftHandAnchor.FromOVRPose(leftHandPose);
		rig.rightHandAnchor.FromOVRPose(rightHandPose);
		rig.trackerAnchor.FromOVRPose(trackerPose);
	}
}

float OVR_DEFAULT_NECK_TO_EYE_HORIZONTAL = 0.0805f;
float OVR_DEFAULT_NECK_TO_EYE_VERTICAL = 0.075f;
var position = new Vector3f(0f, OVR_DEFAULT_NECK_TO_EYE_VERTICAL, OVR_DEFAULT_NECK_TO_EYE_HORIZONTAL);
var rotation = rig.centerEyeAnchor.rotation;
centerEyePose = new OVRPose(rotation * position, rotation);