In the preview of The Walking Dead Season 2 Episode 8: Nebraska Rick confronts Shane about killing the walkers. Shane believes that Hershel knew Sophia was dead and let them go out looking for her anyway. Rick is furious with Shane handing out the guns and taking over, killing walkers that their host, Hershel, believed to be people. Shane knows that he did the right thing to keep everyone safe.
During the Talking Dead, we were shown a clip of Episode 8 in which Dale tells Lori that Shane killed Otis. Lori isn't quick to believe him, but Dale isn't the type to lie. I wonder just how long it will take her to realize that once Shane learned of her pregnancy that it made him snap. Her having a baby was his last straw- sure the presence of the walkers in the barn really scared him (which is why he became so angry and confrontational) but to him, her having his baby, and not letting him raise it, it was just too much.
Jon Bernthal did a great job portraying Shane's transition of going head first in downward spiral from a jealous over-protective, selfish jerk to full-blown megalomania. Shane is tired of Rick making what he perceives as bad and dangerous choices. He believes he can lead the group better, and never truly got over Rick usurping his position once he met up with the group in the first season.
Shane aims to take back what is his: leadership of the group, and Lori. You could visually see on his face all the thoughts racing through his head once Rick told him. After what he did to rally the group and take out the walkers, it's only a matter of time before he goes all cave-man on Lori and tries to drag her away from Rick by the hair.
Watch the preview here
Here are two sneak peek photos:
Watch the cast talk about the second half of Season 2 here