Okay...I just went and read a little more about the Greek Mythology Pandora's Box. Pandora’s box contained many marvels. Once opened, all the marvels flew out but Pandora shut it in time to keep one thing in the jar: hope. However, these marvels were cursed. They left only the illusion of happiness. The world remained extremely bleak, until Pandora revisited the box again, at which point Hope fluttered out. Thus, humanity always has hope in times of evil.
So when Jeff unlocked Kevin from the box, HOPE remained inside the box. Natalie will revisit the box and I'm sure if they offer her money, will reopen it thus releasing HOPE (Houseguest of Previous Eviction). Would that not be the sweetest thing ever!!!!!
I noticed last night when Jordan and Jeff came out from their Diary Room, both did not look at each other much and every once in a while they had a smile on their face. I also noticed that Jordan didn't cry when Jeff was evicted (Very surprising) and he did not give her the much anticipated good-bye kiss. Maybe because it wasn't good-bye!!