Woodbury has many walls that need constant guard attention. The prison group, even with what was left of the Woodbury contingent (eldery, children women) doesn't have the manpower to properly guard Woodbury. The prison was the better choice.
Plus Woodbury is more "zombie-proof" than it is people-proof. If the group had qualms about the Governor returning and trying to infiltrate, then the prison again is the better choice./quote]
Exactly.
That's the only reason they didn't stay in Woodbury because they don't have the man power to properly defend all the walls that have to have people on them 24 hours a day.
The prison is far easier for them to defend with the limited man power they have.
The finale was kind of a disappointment to me, to be honest.
After all that build then the Gov. attacks the prison and does...nothing. They got soundly beaten back and Rick's group lost no one. The Gov. group didn't actually lose anyone either until they ran and he gunned them down himself.
When they were going into the tombs I was really hoping that the Gov. people were going to encounter a seriously slaughtering. Instead they basically just ran out only to be gunned down by their own leader who finally completely lost it.
There was only two really big, or powerful, moments to the ending that aren't really that big of an ending like the first two seasons, at least in my mind.
1) Carl turning pretty much completely heartless. He's becoming the person that Laurie was terrified he would become because of the world he's growing up in. Cold, remorseless, and having lost his humanity. He's shown that in this episode he's becoming a lot more like Shane (minus being completely out of his mind) in that regard then like Rick, who still holds onto humanity. This will be an interesting battle between these two next season.
2) Andrea's death. Now I was waiting for her to die since the very end of season 1. I have pretty much hated her since the final episode of season 1 when she tried to 'give up' and Dale wouldn't let her. She did nothing the next two seasons to make me hate her less, in fact she continuely made me hate her more. So I was definately ready for her to die but I didn't expect it to go down the way it did. I really thought she'd be killed in the attack on the prison (This was my thought obviously before she was placed in that room at the end of prior episode) or in a fight at Woodbury. I never expected her to get bitten, kill Milton, and then have to kill herself. This left us with the powerful moment for Michoine though where she's obviously destroyed over the fact that her best friend is going to have to kill herself.
The one thing I really do love from this episode is that Rick's group gains the addition of Tyree and the lady with him. I think they're both strong characters, especially Tyree (I think I've got his name wrong right now though) and I believe he's going to be a major asset to Rick going forward.
I also liked that the sniviling little whiner from that 4 person group died but I hated that it was just a quick shot to the head by the Gov. that did it. I wanted someone else to kill him.