Wow, that is amazing how the perspective of the photos fools you. I thought from the first picture that the tree was abou 6" in diameter, not 2'. I'm not a professional tree man, but I've felled lots of trees, from the days when I worked in natural resources conservation, to most recently clearing out a cabin site. Danger seems to go up exponentially with tree size. So if that thing is 2' in diameter at the base, its a big dangerous boy. Also, and most importantly, its in a screwy position. As others have noted the canopy is hung up in other trees . That gets unpredictable. It is bent and loaded with energy as others have also noted. The last thing and perhaps the most concerning for me is the fact that the lower trunk is damn near gone. When you are making felling cuts on an intact tree you are more in control and have sound wood to work with. There is no way to know how to control the fall with your felling cuts in that mess of a trunk. HIRE AN EXPERT and KEEP WELL AWAY from the darn thing.
A contractor died last week north of Houston when a tree rolled on him as he cut it down while cleaning up power lines. As I read about it I could visualize it happening. I thought back on some of the tree felling adventures I've had. I've gotten more and more careful over the years and I started out pretty darn careful. It just isn't worth your life or being severely hurt.