This hasn't happened to me, but I read about it on another forum. Soon after, I put a drop of clear fingernail polish on the end of the spring where it forms a small loop. I did the same thing on the little spring for the eyeglass screwdriver. I did this about 7 or 8 months ago, and forgot about it until I read your post.
I just checked. I still have both springs and the nail polish is still there, despite several oilings and washings.