Trek specs list "OCLV 110 Carbon, 1-1/8" aluminum steerer tube, aluminum crown." That eliminates any chance of a bent blade, and there'd be a visible crack at the crown if a blade
was pushed back.
I have a feeling that the reverse curve appearance of the left fork blade is a combination of the angle of the fork itself, and the wide angle lens of the cellphone used to take the photo.
This is what it should look like:
For $20, it's worth it for the drivetrain and brifters alone though, so go get it. Probably sold already.
Someone even swapped those crack-prone Bontrager RaceLite rims, so you're getting a pair of usable wheels in the bargain.
-Kurt