That's a bummer!! Not a massive issue to sort out though. As Alan said, the right wood and hammer will see that straight again, quick check underneath and another bumper will see it right. The insurers will probably book jig time, panel beating, resealing, respray to rear panel, new bumper cover, prep and paint to that, possibly new arch liners, make good bumper mounts etc. if they can find a brand new bumper, from Fords will probably be more that they value the car at.
If its any consolation, Mike Cougar571's car had been Cat C'd several times over and he still runs his as his daily driver.