Greetings caught-up Fold!
You have just been served a huge helping of BS straight from the writing desk of JJ Abrams. He seems to be all about time travel and just making everything OK in the end. ”Of course, that make so much sense that the island would just disappear into time like that…” Oh well, plot line = over. Thanks, JJ Abrams!
He is also a husband and a father (of two!) which he loves!