I see the opposite. It's move from an information to an event. From burocratic to more emotional. If you sit there df and a other person get's reinstated, what causes more pain?
Shunning will only end or a little bit reduce if there is a lot more pressure from the outside, maybe if they have to pay money for some damage they cause. Also als long as everybody in the cong is so brainless to follow the rules, they never put away this cruel practice. Even if nobody in the cong say it's wrong, even if he or she don't shun, the fear never ends.