LOST Revisited: Season 6, Episodes 1, 2 “LAX”

On the Island, Sawyer wants Miles to use his power to talk to Juliet. In fact, he grinds Miles’ face into the grave. The message Miles gets is “It worked”. What does that mean? The bomb? Because that sort of didn’t work. Well, it created another timeline, apparently, but it didn’t help the here and now Lostaways. What does she mean? Do we have to wait until her ghost appears to Hurley?