@bruceha2000 my husband said that trees that are too dangerous to be under,we wail away at them with whatever rifle ammo we can get our hands on and then wait for a good strong wind to put them on the ground.
In all seriousness, while the ground is frozen can you get a loop of tow rope around the one that the trunk is hung up on the stump and then attach the tow rope to chains to get you a safe distance away from the trees? Use your tractor then to pull the one tree trunk off the stump. We've used up to 60 feet between tree and tractor using tow ropes and logging chains.
Yesterday we cut down a 25 foot red cedar that was in the way of one of our radio antennas. They are considered scrub trees here so we weren't too upset. Silly tree it turns out was thicker on the side that was facing the antenna wire.....and wanted to fall that way in spite of DH notching it in the opposite direction. You know how it goes. We walked around that tree, mumbling and grumbling along with a few expletive deleteds before trudging back to the house for the tractor. I volunteered to get the tow strap around the tree...DH thought it was funny that I was talking to it like it was a horse....easy big guy, easy, you don't want to fall on me and hurt me...yeah, I know we are killing you but please don't hold a grudge...easy...
We got the tow strap in place, two logging chains, hooked it to the tractor, easy peasy. Tree immediately shifted and fell in the right direction.
As for the Prius....you should hear some of the excuses our city friends make for not wanting to chip up their new cars on our pathetic,crushed rock country roads. Every county side road in Missouri is unpaved. County roads are paved but side roads aren't. Limits the driving possibilities if you want to pamper your new steel baby.