What must have happened is that KDDJ's photo with JM got posted here on WS first, then one or more posters copied the picture over to Facebook trial thread(s) and those sites are seen by various trial insiders and media.
This is what many people don't realize about the Internet--there is no real privacy. If you (the general you) post something on Facebook or here or any site that can be seen by the public, that's like broadcasting yourself or your friends/associates and showing what you or your friends/associates are up to, whether you intended to broadcast that information or not. And defense teams use the Internet just like everyone else and will find things to use to further their case or causes (hey, just like everyone else), and the media will use and exploit something if they can because it generates ratings and advertising $$$.
And because the context is totally lost the finder of said item will create a story to go along with whatever they find to turn it into something bigger or more salacious than it might otherwise be.