Mangoes, some questions, suggestions, tips, pointers, what have you.
One, glens be danged, post bigger pics.
Two, how far is the healthy ash away? It looks close, and should make the job a breeze. Just climb it as murse said, and rig the dead tree off it.
How far is the house from the tree?
Is the tree currently hinged to fall just to the side of the house? And is it back guyed to the tractor/
So, is there not room to drive a crane or smaller boom truck past where the tractor sits? A 17 ton boom could easily handle the job if it oculd get close...and they are quite maneuverable?
TreeDr...That is a big NEGATORY!! Hope you were joking...25-30 yrs ago, some local tree guy decided to take a risk and climb a conifer that someone had cut a 60-75% wedge in.. When he let the top fly, the rebound caused the butt to fail....result, one dead climber.....