that's why airports have tugs.
...but I bet they didn't have a DC3 bar at MAN! A prudent operator would carry one but probably not enough room in the DC3. At LGW, they have a magic device called an Ash Cart, readily adaptable for a number of different scenarios like this. Was used for rescuing many a stricken smaller aircraft from the runway. In this case, slide it under the tailwheel and away you go, backwards.
TOO