This solution isn't for everyone, but I'll just throw it out there. I have these broken branch, "widowmaker", type situations all the time and have tried free-climbing, roping, ladders, etc. Finally, I decided to invest in some tree climbing gear and learned to climb.
I'm not a daredevil and not especially fond of working at heights, but feel safe enough doing it with the right gear and safety equipment. I only go up in situations where I feel personally safe and believe that I won't be endangering any property or other people. I am in no way an expert or professional and know my limitations. There are jobs I won't do and still hire professionals when deemed necessary.
That being said, I have used my gear and techniques quite few times to remove snags and it has been worth the investment in time and money for me to learn how to climb. Here is an example of a snag I recently removed this way.
Notice the branch hanging down almost parallel with the trunk about 20 feet up on the left side. It is about 8 inch diameter and 10 feet long. It had apparently broken off in an ice storm or wind storm years ago, but was still hanging by a few fibers at the break point.
If you zoom in on the pic, you can see that the whole tree is actually split from the top of the broken branch, down several feet. So, my job was to attach my climb line to the big part of the trunk coming toward the camera, about 5 feet above the top of the broken branch (and the split). Then, I went up and cut the broken branch out of the tree from the top, where the break was.
Turned out, the fibers holding it at the top were so rotten, all I had to do was give it a couple of good kicks while hanging on the rope, and the branch fell out without much cutting with the saw. Anyway, it’s done and now looks a lot better. I was a little worried about tying into the tree above the split, but it is a big hedge tree and pretty tough wood, so it held me just fine.
Again, this isn't for everyone, but I'm 65 and just learned how to do it in the last several years, so it's not out of the realm of possibility to do it.