Changing the direction is easy - just flip the polyline path 180Â° along the X or Y axis.
I've tried moving, rotating, resetting references and deleting and recreating actors but the paddle keeps skewing with start/end point at lower left, so I assume your drawing is either haunted or somewhere in it's history is a non-reset or undo that you missed. What I haven't tried yet is exploding, repositioning and recreating the actors. As a quick test, I recreated your model (in 2D) and it worked fine.
TC18 / 38.5 Platinum, AL5. XP, Core2 Duo E6750 OC'd 3.0Ghz, Render test: 3mins 3sec.