This weekend the wife and I worked to carve down some of the heavy dead wood on top and get it into a smaller pot with more suitable free draining soil:
To remove this soil, I simply shook entire tree over my grow bed and the particles fell out quickly.
Not bad for growing in turface/pumice/chicken grit.
I like to employ excellent help when repotting larger trees like this one.
If you can spot the pieces of my fingers left behind I'll send you a free bag of akadama.
Far from finished having dropped so many branches but this view gives an idea of where we are aiming with this material.