flushcut
Addicted to ArboristSite
How thick is the remaining trunk? If it is like a foot or better give it a shot. I would tie into the stems behind you and use something like a tear a way saw lanyard as your safety, just in case. I sure as hell would not rig anything off of that while you are spured in, just bomb it if you can. You can call a rental yard for a small towable lift or have them deliver something that will fit your need. Just be careful your gut instinct will tell you everything you need to know as long as you are listening.