Here's a tight pair of pecker poles. They're so tied up the first one I cut didn't even settle when I cut the stump out from under it. It's just hanging there in mid air - it never hardly moved.
Face the remaining one to the lean of the cut off one. Put the backcut in carefully . The hanger will probably pull the standing tree into leade. I've had to do that many times pre commercial tree thinning with trees that size . And with old growth Sitka spruce and western hemlocks.
If you could get something between them and using a come-along, at a distance, giving the cut one a good tug might pop it free. Emphasis on distance.