Do you have an idea what is broken?
Did the tree that it is hung up on puncture something, or cause a break?
Or did something go in the engine that just happened to coincide with getting unstuck or un-hungup?
Hope it isn't raining and getting a chance to dry up. Will be curious as to what you have planned to move it with, and how. Kinda exciting on this end, but am sure it isn't on yours.
I was in a similar dilema once, years back when my 2cyl Deere 420 rolled away from me, and into a gulley, breaking the casting that went over the front axle. It lay in the ditch on the neighbor farmers pasture, and the radiator hose separated and the water ran out. Couldn't tow it, and wondered all the next day at work, how I would move it. No good answers, but had let the farmer know it was in his pasture.
I came home from work and it was sitting by my garage. The old farmer, who only had one small AC tractor went out, looked my tractor over, got out a log chain and a chain binder. Pulled the castings together and slipped the radiator hose back on. Filled it with water and drove it home to my place. I was tickled pink at his solution to my problem, and his ingenuity.
Hope your plan goes well.