Plastic front panel damage, 2010 Prius

After 16 1/2 years with only a few small scratches, I tore the front right plastic panel on a pile of hard snow last night. See photos. If it weren't for the bolt in the wheel well, it would undoubtedly have torn off completely, but now it's holding on by a small piece at the upper left. It was bent outward, but I managed to bend it back. Driving home, it came loose and bent out again. Fortunately after a stop to put it back and a slow drive home, it stayed put. Is this in any way repairable, or am I going to need a replacement? What can I do in the short term, to keep it from bending out on its own again? It's been very cold lately, which makes adhesives less effective, although it's supposed to get to the 40s on Tuesday and Wednesday. I do have some large binder clips... I would appreciate any advice.

Almost makes me miss my 1988 Accord. Its steel panels and rubber-covered bumper would only have been scratched.