Yea i don't think that Ben has left the island to. Maybe he just wanted to stay on the island to see his mum. Maybe his mum might come to see ben in another episode.

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Hurley: What about the B-O-D-Y-S?
Michael: What are spelling, man? Bodies?
Walt: B-O-D-I-E-S.

Hurley: Dude, you've got some Artz on you.

Bernard: I'm a dentist, not Rambo.
Rose: And don't forget that!