Well I think it depends on the terms that it was originally published under. For example when you publish with a short story magazine, you (generally) still hold the copyright, and the story is kept in the archives unless you request that it be removed. Depending on the contract of the school paper, they may have the right to that article for perpetuity and therefore he would not be able to do anything about it. And, also, taking it all the way to a lawsuit would be hard and probably not gain him anything and only draw attention to that work.
It's less about the right to clear onesself from doing stupid things and more about the right to control one's own work in this case. So yeah, I think that one's own creations fall under a totally different category than erasing other people's words about you. There's a reason why on a forum the average poster has an edit button on their own posts and not anyone else's.