I am ashamed to say that while fully "in", I shunned completely by the book. Even as an elder, I lifted the shunning rule only when it was necessary for religious reasons.
Alright, I'll refer to a specific incident, confession-like, which might get you angry (justifiably).
Last days as an elder, we had a funeral. The deceased person's daughter was recently DF'ed; I had been in her JC. When we entered the room to give condolences, I passed beside her, giving condolences to all relatives except her. Of course, she was so upset that she called us few minutes later in a room and put a complaint about me in front of the other elders. That shook me well. (She ought to have punched me in the face.) A few days later I was due to deletion, for irrelative reasons. I phoned her, a day before the deletion announcement, and apologized to her for the extreme shunning, almost crying. Fortunately, she accepted my apology. That incident was just few months before my waking up.
We've done, as jdubs, nasty stuff, more or less. Shunning alone is one of the nastiest. We can't change that, but we can try hard not to be judgmental now, whatever our current affiliation and views are.