awesome! Seen something like this years ago when touring the suburbs in Ukraine where a tractor got stuck in a similar fashion and the farmer did more or less exactly same thing to get it out. Works almost every time I guess.
I used a Kenworth T300 flatbed tow truck to pull my tractor free once. Also used it to pull the pickup truck I had stuck to the frame rails in mud. I could have used this trick to free the tractor, then used the tractor to free the truck.