That really doesnt look that bad What i would do is secure the chassis to something solid eg tree/ building/ lampost. then you could winch the rear corner into place the beat the floor down on the bump with a sledge hammer and i think it would be close. give me a ring if you want talking through it mate.
There not that bad in the uk. I did pull one out of the ground before winching a iveco 7.5t recovery truck up my hill before.