Although the entire debacle was truly an epic catastrophe for some (what a horrible ordeal for someone to be outed to their family and DF'd for being force added into a Facebook group)...I wonder if this idea might be helpful.
If anyone is the victim of such an act again in some way, perhaps stating to any who inquire (friends, elders, family, etc...) that you are shocked and horrified that an apostate group would add you to their membership might shift suspicion from the victim to the ghastly Apostates who have victimized a loyal servant of Jehovah God...their wickedness and evilness thereby being confirmed by how they are victimizing loyal witnesses?
I think my first reaction would be to express shock and horror that someone had done this to me. How could *I* have been added to an Apostate Facebook page???? They are out to get Jehovah's people!! And then say something in line with the Watchtower position on the dangers of the internet. Be really horrified and disgusted. Don't be afraid to make some faces, too. Make it Oscar worthy!
I would also add that you should use as much Watchtower jargon as you can possibly fit into any and every point you make. Also, make sure to say JEEEEEEHOVA with great emphasis.