Hi Ian,
You need to set the Angle in Search Area. The tracker can handle a bit of rotation without this, but for fast, large rotations like this you need to set it. Just estimate the degrees of rotation per frame and enter it into the field. You should keyframe this value so it's only set for frames where the rotation happens, because searching for rotation slows the tracker down a lot.
Best regards,
J-P
John-Paul Smith | CEO | Imagineer Systems
www.imagineersystems.com