Orientation in 2D

[Livealot]

I'm working with sprites in 2D, so set my CurvySpline to Restrict to 2D. That seems to affect control points but not orientation. The orientation vector does not stick to the same XY plane. So, sprites traveling a curve in 2D get "skinny" on the curves. I'm guessing this also has something to do with how I should be setting my Orientation Source & Target in the SplineController, but I have yet to find a combination that works.

Likewise, changing my CurvySpline orientation from Dynamic to Static, or None, also does not get what I want, although leaves sprite in the correct plane.

Thanks!