Easy to get it out of there. Pop the linkage off the leveling valve on the tractor rear suspension, hold the lever up so the suspension inflates raising the front of the trailer. drive it back to level ground and reinstall the leveling valve linkage. Even if you had to break the linkage, it would be cheaper to repair than the cost of a tow truck bill. Way back in my driving days, I helped a few guys out that way, two of them that were stuck in RR crossings. If the truck has spring suspension, you'll need a pull.
