I really, really liked this episode. It reminded me a bit of a very revamped "Killer" kind of episode, where the suspect is more concentrated. Only this one was much, much more climactic than Killer (which ended lamely). I loved getting into Natalie's mindset; I mean, knowing the killer is just as important as knowing how they catch them sometimes, especially with important cases like this.
I don't think the GSR reactions are over. Because Grissom walked out so fast, I don't think we'll see the real reactions until later, when the information has had time to seep in for everyone.
As for the cliffhanger.... well, what can you expect them to do? Jorja still isn't sure, and the episode had to be rewritten to accomodate that. They wouldn't kill her off only to find that she then wants to sign the contract. So, they did what they could with what they had. I don't think it would've been a cliffhanger if they had all cast contracts signed. (I am not pointing the finger at Jorja, I think she has every right to negotiate. I'm just saying.) So... just cut the writers a little slack about the cliffhanger. I'm sure they did what they could. They wouldn't leave us hanging on purpose.
This episode definately isn't over. It's pretty much a two-parter... just with the next half being four months away. (No, not four months!) I can't wait for Season 8!