GentlePurpleRain: I went today to search with rurbonas, and it appears that this cache has in fact disappeared. I was half-hoping it would reappear as it did once in the past, but no such luck.
I think this cache has run its course, so I am archiving it. If some lucky soul rediscovers it in the future, maybe it will have a third incarnation...
Happy caching, everyone!