Tomasz -I'd check up on whether "adjacent islands" apply to the USVI. The office in St. Thomas is small enough so that if you talk to an officer _before_ leaving for the BVI to ensure that they interpret the rules the same way as the letter of the law then you will probably get the same officer on your return or at least one who recognizes that you "spoke with officer xxxxx" before leaving. The wording you posted doesn't say anything about the USVI which leads me to believe that you might be SOL.
The sail from the BVI to St. Maarten can be miserable with the wind from the wrong quarter, but at least coming back is a quick trip! I think that SunSail will allow you to travel to St. Maarten or Antigue as long as you clear it beforehand (which you will need to do so that they put the ownership papers on board). Clearign in and out is easy. But the route between the two countries is full of cruise ships going about your speed and freighters who don't necessarily pay much attention to traffic and are rumoured to travel with insufficient
lighting. At least the cruise ships are lit up like Christmas trees and have active watch officers who will probably see you.
No McDonalds in the BVI - one reason to stay!