Loosing wheels on trailers isn’t new. It gets complicated when axles fall off…
Many moons ago I towed a 6 ton trailer with a short wheel base two litre petrol landrover. I thought it was 3 ton, but because I’d never towed before didn’t know there was a problem. A pal was pulling an identical load with his motor and he had a perkins diesel under the bonnet 
Of course, if I knew then what I know now, I would never have done it. But these things come with experience. One More Mistake into the line! 