Look up under the sink at the wall. There have been a lot of different methods used to fasten sinks. Some use a metal plate on the wall that the sink hangs from, and removing the sink after disconnecting all plumbing is usually not hard. Any caulk along the back edge between the sink and wall needs to be cut through, then just lift the sink straight up. Others use screws though holes in the back of the sink into the studs. If it appears there is nothing holding it I would bet on the bracket method.

you can simply build a frame out of 2x4's and drop your sink into that and then use a curtain for your under the sink area like they did in the old days. you could also build a little platform a few inches off the floor to use for storing things on. we have one like that in our powder room (also has a curtain hanging off of the sink to hide the pipes and clutter). and there's also the option of a wall-mount sink. vintage ones are highly-prized, but there are still some manufacturers making them. kohler springs to mind as one, and lots of restaurant supply-type stuff made of stainless.

Quite the opposite of what you are experiencing, our fabricator's contract was quite long and filled with details. There was information included about the qualities inherent in natural stone (natural properties of stone, susceptible to chips, etc.), incidental damages being the responsibility of homeowner (scratches and scrapes to cabinets, paint and drywall, chips, etc.), payment schedules, dispute procedures and attorney fees, mechanics liens, etc., etc., etc. Detailed drawings and specs were included for us to examine and sign off on. Sink reveal, how the sink would be installed, and edge detail were included. There was a notice regarding cancellation and returns that included a statement that said the product could only be returned if "damaged beyond repair" by the fabricator or installer. If you have specific ideas about what is "damaged beyond repair," you should discuss this with the fabricator and make sure you are in agreement about exactly what that means. To me, damage beyond repair is damage that is visible even after the repair is made (as in a broken off corner that was discussed in a recent thread here). I didn't think anything about this at the time, as I assumed common sense would prevail if the slab was damaged (though I know from reading GW that is not always the case!). In any event, I wasn't worried about it since I had more slab than I needed. Also included was a statement about workmanship saying that it would be done to industry standards and in a workmanlike manner. I was fine with that. I had no problem with the contract at all, except the part about damage to the cabinets would be mine to remedy. So I just covered the front of all the cabinets with cardboard and taped it into place before the installers arrived so as to keep that possibility to a minimum. (Nothing was damaged by the way, at all). I had already seen recent work done by this company on two other kitchens. Both customers were quite happy and I didn't see any reason that I wouldn't be either. All of the details that were important to me were included in the contract, but even if the contract had included much less detail, I would have still gone ahead with it because I'd already seen the guys work. If I had run across GW BEFORE my remodel, I would most likely have been scared to death of all the things that might possibly go wrong. Fortunately, at that time, I didn't know anything about bad seams, crappy edges, damaged slabs, etc. I had seen plenty of bad sink installs and uneven reveals, though, so I made sure that my fabricator, installer, and the guy doing the templates were aware of how important it was to me that the cut out be accurate. If you want something specific in the contract, request that it be added.

Very cool! Your soapstone is my dream!