The cutting torch works but... Most of us are working on jack stands. The bushings will burn, filling a wheel well with choking black smoke. It gets very difficult to see what you are cutting.
I had to cut away all 4 ends ( 8 total ). Didn't take long to see my need for a fan. The eccentric washer helps to prevent cutting into the frame clips. For me this was 1 at a time process. Cut away a bolt head, chisel and hammer to get that eccentric washer or remnants of it off. Move to the next. I still had to fight the bolt ends with a pry bar to get the arm out of those clips. Good luck with it.