This has been said, but since they're all getting deleted what about... (read at your own risk!)

jin?
maybe i am remembering wrong, or wasn't there a scene last season where everyone is speaking english and yelling, and all jin can hear (we hear it from his perspective) is jibberish? i think it's when they're all fighting about the watch.

i don't think he's been able to speak english this entire time. maybe it's a dream, or something similar. thoughts?