Ex elder here!
When I was in, we didn't know about so-called theocratic warfare. The other elders (even though a couple were idiots) I was on JC's with never resorted to lying or deception. But I guess things can and have changed.
My warning flag would be up if 3 of them wanted to meet with me. Tell them you don't trust their motives and you will only agree to meet with two of them someplace other than the KH. This way, the 3rd one can't "conveniently" drop by because he needed something from the KH library. Or you could tell them to put it in writing that this is only a shepherding call and have them sign it. Tell them you will sue each one as an individual if something other comes out of this meeting.
My number one advice is.............DON'T meet with them. They are up to no good.
HappyDad