Jess and Cody should never have shown Paul how upset they were. They should have played it cool, like they didn't care. Obviously Jess is upset because she will be forced to use it, she wanted to get another week out of it. I'm sure Paul realizes that she's just upset she has to use it versus lying she even has a power.
If they are actually talking about getting rid of Alex, maybe they found out what the hex was and Paul didn't want to waste his HoH so let's get Alex out. The only thing is Jess or Cody will still be on the block so I'm sure Jess will use the hex even if they all insist they will vote out Alex over Cody (who I'm assuming will stay on the block) or maybe she won't use it. Cody did tell her not to use it on him, that he's hurting her game, to just let him be evicted. I guess we will have to wait and see.