His owner is offline, and he's not the only one :P They dont go away until there owners come back online, where they just vanish back to there owners sides. Thay dont go away if u refresh the page either most of the time, though sometimes they do.
S96 Alanna (other platform, so dont think that this will be much help)
Update:
Elise came back online, i refreshed the map, and crackers went back to his mistress: