Being a Bear of Little Brain, there are several aspects of this sorry state of affairs I find puzzling. (I have not scrolled through any previous threads.)
This is an historic and, presumably, fine-sounding (if not much, much better) instrument. I can find no recordings to which to listen online. If I have missed any, please point me in their direction.
Attempts to restore the organ in situ (the most desirable solution in many ways), or move it into a nearby location, seem to have failed. Have serious efforts been made, therefore, to sell it to a worthy buyer, who would treasure it ? If they want rid of it, do the local authorities not wish for the funds this would provide for the benefit of their council tax-payers ?
If it is not wanted locally, its preservation and restoration is of the utmost importance. Has no other venue (sacred or secular) expressed an interest ? With the sale of (possibly) much less historic organs overseas, this seems incredible.