Within 30 minutes of removing it from the form after leaving it in there for over 12 hours, it started warping back to the original image.
I let it warp to see how far it would go and it basically went back to where it started. Later, I twisted the surface with my hands past the zero point and it straightened out again. I imagine that given an hour or so, it'll twist back to the warped position but I haven't checked on it.
What it tells me is that if/when I go fly it, I'll just need to give the surface a twist before flying and I should be fine. It isn't a competition plane or anything close to it so I'm fine with it as a fun flyer
Thanks for the help everyone!