I'm kind of glad Rick finally stepped up and shut everyone up. Everyone talks a big game but when he told them to leave, no one did.
I honestly won't mind if Lori or Carl dies. I don't get Lori at all, just a couple episodes ago she told Rick he was probably going to have to kill Shane to "protect whats his" and then he kills Shane after Shane was planning to kill him and she freaks out. I don't get it.
Yeh, I thought it was more about Carl, but I also thought she was going to tell rick that the baby was Shane's until he dropped the Carl shooting bomb on her.
I think a lot of it probably springs from Lori's own guilt. If she doesn't sleep with Shane, there's a chance that the tension between Rick is avoided, Shane is still alive, and Carl doesn't have to live with the guilt of having "killed" Shane's corpse. I think her reaction is that irrational anger you get when you know you're the one who screwed up, but you lash out at others. Couple that with mama bear protective instinct and Rick's terrible explanation skills, and you have an angry woman.