When you see [flagged] it means that users flagged the story and that there are enough flags to predominate over the upvotes. If [flagged] goes away it means that upvotes regained the upper hand.

But please don't take HN threads even further off-topic by editing your comment to complain about this kind of thing. The way to get an answer, as the guidelines explicitly say (https://news.ycombinator.com/newsguidelines.html) is to email hn@ycombinator.com.