I just remember feeling akward. I also remember feeling that the person being "shunned" was a bad person-- someone that was a threat to my spiritual nature. As I matured a bit I just ignored what was insinuated I should do if I were to meet someone not in "good-standing" with the congregation and treated them as I would treat anyone I have met in life- with respect and dignity, I realized that my mind had been molded to think that way(whether intentional or unintentional).
I've experienced extremeties from others, though. A couple that had a son my age when I was growing up and my family has known for over 20 years was in my work recently. I did not see them at first. I turned suddenly because I felt someone staring at me and turned to meet the wife's eyes. I smiled-- she looked at me blankly and then I looked away.
Just last night I received a phonecall from my little sister who is a regular pioneer and who's husband served in bethel and is an elder. She asked if I would take the wedding photos of a girl who she studies with. Apparently, the man the girl is marrying is DF'd and the woman that was originally taking their wedding pictures backed out because he had failed to be reinstated when they thought he would be. That sickened me-- the wedding is a week from Sunday. No class.