Never realized it is fiberglas, but the green inside panels makes that pretty clear. The bottom ring is built to take a lot, but is bolted together. Pretty much billboard support-type structure. Above the ring there is a fairly lightweight structure (also bolted) plus the panels.
So in my assessment, it should come apart easily and be easy to save. Just a matter of unbolting the parts. If they take saw to it, it will be gone in a few days. If they disassemble with care, no more than a couple of weeks. Of course the foundation slabs will take a bit more work.
Just the right picture can show an awful lot.