OK, How about a chain link fence wrapped around the drum? It was laying flat deep in the brush and unavoidable. It jammed into the cutter blade, I needed to flip mulcher over to get everything out. No damage, just cost me a whole day.
How did you take a picture of my machine without me knowing?
I've been able to get a lot of stuff out by rolling the cutter backwards on the ground. Get a loose end, then run over it with the track, drive forward and it will often pull it off. Sometimes you have to repeat several times, but it's better that spending hours cutting.