I just saw this question. It has 60 revisions, the same user adding and removing the same line of text.
I noticed it because the OP has 51 edit reviews, of the same post. So probably something went wrong in the database.
This is case of sock-puppetry and badge harvesting. The OP has approved most of the suggested edits, and they are all separate.
Flag the post for moderator attention, I certainly will.