Did you try going back up the hill in reverse to straighten it? :laughing: Ok, so you tried that and it was a failure so try this.
Drive a piece of pointed 2x4 in the dirt, but not over your utility lines, leaving about 3-4 inches protruding. Drop the front of the deck over it with the blades perpendicular. Put that puppy in R and bump that piece of tin against the 2x4 just a little or a little harder until you like the shape and the blade doesn't hit the deck anymore.