Around 32 years ago I bought a Mk.4 Cortina Estate from a salvage yard, R. Windley at Tattershall, Lincs. which had been run into the n/s/r on the light unit, just missing the tailgate. We towed it back to Gainsborough to my mates garage/body shop where we used a very similar piece of kit called a "CarOliner". It was used to pull the nearside rear back out before we could repair the outer panel.
This video makes that process look very easy and believe me it was anything but. The Russian guy has obviously got immense experience with that equipment.
Tony.