I've been thinking of another way to cause trouble for the Watchtower. I don't think one silver bullet will take it down. It's more of a siege campaign.
Here is something I am thinking about. I know that in the past the watchtower used cutting edge technology to set up printing processes in areas where the work was banned. (for example the laptop-laser printer workshops the carried in old suitcases in Kenya in the 80's.).
What if the WTS was using certain technology in areas where such technology is embargoes (Libya, Sudan, Iran). It would be hard to catch them, but if caught, the State department could launch an investigation into the watchtower's operation that would be quite painful for the wts.
on the flip side, some governments might not like it at all if they were to find out that the Watchtower owned stock in an American defense corporation. What little goodwill they manage to have with governments is usually by waving the neutrality flag.