I wish that made some sense, but I certainly don't see it. I think you should read what these administrators have to say: , . They understand the issues with the article, and Wikipedia's way of dealing with these situations. 

 It's always a good idea to contact the editors who were involved before doing such a radical things as undoing a redirect. That's a big no-no here. Many articles depend on redirects, and undoing one single redirect can orphan some articles, or at least cripple them. Articles and redirects have longs histories, with many editors involved who have worked hard and produced a lot through collaborative editing. It is an act of very poor judgment, an exercise of bad faith, and simply a slap in all their faces, when you single-handedly come along and undo their work. 

 If you really think there are other meanings to the term, then let's discuss them. If they can't fit into the Spinal disc herniation article, then let's make a true disambiguation page. (I love doing that!) But the old article should not be awakened to life. It has gone through a sort of metamorphosis and is now a much better article.