There are a few anomolies in the stl but Slic3r and Craftware generated gcode without any problems (Slic3r slow and Craftware super fast). I did however have issues with Skeinforge therefor other slicers may be hit or miss. I would be glad for any feedback.
If you want to create a twist in this wing then gently heat to make the plastic pliable and bend/twist to suit.
There are webbed and hollow stl's for strength or fragility respectively. You can scale up (like these prints) but you may lose detail if scaled down.