The only way shunning really comes into play would be toward a family member, friend or workmate - people with whom you might otherwise have regular contact. All my family and friends shunned me when I left Watchtower.
That leaves workmates, and yes there have been a couple of real @$$%&!$ that I'll have nothing to do with. But unlike the JW system, I don't practice a total cutting off. I just choose not to associate. It's a pretty loose arrangement where they don't like me, I don't like them... no reason to seek each other out for companionship. We still work together professionally and respectfully.