I just got this in an email:
https://www.facebook.com/photo.php?v=1450767261845493&fref=nf
You might enjoy it.
Wow!
Impressive!
For anybody contemplating something similar, a good trick is to put a large framing square in the cut as you are making it. Sighting along the side of the square will get you VERY close to where the tree will fall.
I showed this to my Son ( A Grad. of NCSU School of Forestry). His comment was "Nice Tree"