Battlestar Galactica: Water

Adama: "There is at least one Cylon aboard the Galactica."And it's all about Sharon, our resident undercover Cylon.What's up with her? It's like she "woke up" from being possessed, or something. Is she being remote-controlled, or is she programmed? The implication here, when Sharon was able to see the positive water signal on her comm, was that she can indeed overcome her programming.