Was this problem ever get resolved? The same thing is happening to me.
I have a simple Starling sprite and I am calling...
TweenMax.to(mc, 3, {bezier:[{x:209, y:126}, {x:149, y:348}, {x:300, y:345}], orientToBezier:true});
... same result, the Sprite spins really fast around its pivot point and not the path.
Thanks!
-Shane