ropensaddle
Feel Lucky
GOOD POINT! I did have a sense the tree was in trouble. That's I why urged to HO to take it down. But, I had no idea it had a hollow that extensive. So, I pieced out the top in small bits to avoid impact to the stem.
I setup a speedline 70 degrees off the lean to avoid the house, impossible terrain and other trees. As stated in the OP, there was no access for a bucket or crane. The speedline is 250 ft of 1/4" steel cable (100 ft to a another anchor tree, 150 ft to LZ) with a snatch block and haulback. The stem was also anchored opposite the lean with 5/8 steel cable holding line. Seems excessive, but as it turned out ... it pays to be cautious.
Lookin good up there sj