I think it depends on whether Vic feels threatened by that person. I know that, for some people, he’s not concerned. For others, you are advised not to be in contact. Maybe not in such direct words, but with a few twisted anecdotes and half truths that paint the particular family member in a bad light. Vic will often tell stories of how “horrendously” these people treated him. Most of it sits in the realms of half truths and one sided stories, but he will always leave just enough truth to make his stories seem plausible. However, as others on this forum will undoubtedly know, sometimes he doesn’t cover his tracks and blurts out blatant lies about people who have left the fellowship. But I digress.
Once you’ve heard all these things, you are left with a choice. If you side with Vic, you end up going down a track where you slowly (or maybe quickly) disassociate with those family members Vic is threatened by. And you’ll probably be convinced that you’re doing the right thing (have a listen to the podcasts linked on this forum about cognitive dissonance). Additionally, if you provide him with any details that confirm your disassociation, you’ll probably do well in his books. That’s narcissistic supply. Who knows, you might even end up leading songs one Sunday. But again, I digress. If you don’t adopt the “BCF culture” then you run the risk of becoming the focus of attention. This is because Vic will feel threatened by what that family member might say to you. He will then do what he needs to do to remove that threat.
Of course, there may well be other ways that these things happen, but these are just my observations. To be honest, I was never ordered to disassociate with family members. But the stories I heard about them made me feel like I should limit my contact. Thankfully, I have since found out just how true all those stories were.