The basic idea is to extend the pole down to ground level and install a tilt mechanism with a suitable line and pulley so I can remove the pole from the T&K brackets and gently tilt it over into the back garden. Here you can see the T&K brackets and the newly installed pulley (instead of pulley, bailing twine and knot read weak point):
This is the bottom of the now extended pole which has the tilt mechanism on it:
This shows the cord that I'm hoping will hold it all when I remove the brackets (yes, it's bailing twine):
The top of the rope is attached to the mast using a clamp and one of these knots:
So, the plan is to remove the U bolts holding the pole to the T&K brackets and then slowley tilt it over until it's accessible from the back garden.
Damn cats asleep on my favourite jumper:
How can anything possibly go wrong?