It's a bit confusing, but it seems like there's a dispute over ownership of the property (which contains multiple buildings) between two factions, one of which has the deed but not control of the synagogue building itself. Some radical Israeli students belonging to the faction controlling the synagogue decided to try and "expand" their territory by connecting it to a long-unused ritual women's bath in another building, making the other building "a part of the synagogue." It's an attempt at eruv-style rules-lawyering your way into a sort of adverse possession, I think.