I'm the type who would put the store on blast simply because every snake it sells now is at risk for harboring nido and spreading it. Yes you are supposed to QT new snakes but the sad reality is most people don't.
Also OP not only are you not getting any new snakes soon, you need to avoid expos and exotic pet stores so you don't inadvertently spread it to someone else's animals. If you need supplies or frozen feeders, order then online and have them shipped.
You can also ask around and see if there are any researchers looking into Nido. I know a while back someone was collecting positive snakes but it was years ago and I forget who it was.