I agree with the others.... you opted to NOT take it down on your terms.... from what I understand, killed it....to now, let it come down on its own terms. Not a situation I'd like to be in.
There was a hanging dead tree here. I actually posted a thread on TBN about it asking something like "any bets when it will fall" The tree was NOT on our property. It was on public land across the road from our land, leaning AWAY from the road. So it posed no real danger except had it fallen and someone or something just happened to be under it at that moment. I think it was a white oak.
It had been hanging for several years. Looked like a 45 degree angle but was hung in another tree....made my post here about it and I think ANOTHER 5-6 years passed and it was STILL hanging out.
So, a year ago, I took my backhoe over there (industrial) and dug around the root ball a bit and pushed it over. Now, it's not bugging me anymore but more important, it's no longer a possible hazard. We cut the very straight trunk, brother in law took it and about 5 other trunks to a sawmill and had some beautiful wood cut from it. Zero knots, 15/16 foot lengths.
We left the canopy so there is STILL a lot of good wood over there.
Smashed things near it but now all that can start the healing process.
In fact, we took TWO trees out that day, one leaning away from the road, the other was leaning towards the road. I saved us (primarily myself) a big headache later on when it would have fallen on its own, across the road.....probably during a rain storm.....probably when I'm leaving for work at 5:30 A.M. causing me to have to fix it on the spot in ugly conditions rather than on my/our terms.