This whole thing sounds like B.S
If there were any Sandblast for sale one of the big dealers would have it already. Ian G has brought in 99% of all the morphs from Africa including the sandblast, toffee, paragon, etc.
I talked to Ian recently and asked about anything cool in Africa looking to get in on something new, and he said there was not too much for really odd stuff. If there was a Sandblast it would be here by now, or at least worked on by a U.S dealer.