I've had this problem in RDS. Here's what I did. I rotated the object manually, and yes you can only rotate it 180 degrees AT A TIME. So, I had an object I wanted to rotate four times; I started it at yaw=0. Then moved to 1 second, rotated it 179 deg. Then moved to 2 seconds, rotated it 179 deg, again (using local coordinates, not global). I applied the bezier tweener because I was increasing the speed (or actually, reducing the time between 179 degree rotation keyframes). Kind of a sucky work around, but it did the job for me. Hope this helps!