I don't know, I see the plot going a few ways:
1 - The viper pilots just aren't willing to fight eachother. The She devil looses her foothold on power, goes bezerk, and then Adama Takes control. <- BSG writers seem to think too much to make this situation 'overly simple' as this proression would make it.
2 - She's testing Adama to see how far he will go. The story was maybe planted about her being whacko to get Adama worked up, and to get him to realize that she demands total control. She feels that Adama is the type of man who would go head to head with her, and she knows that Helo and Cheif had a relationship with Sharon from the logs.
She thinks she's got to get the weels turning, and she's pushing his buttons to make him take that step. Then she's going to pull something like offering him a fight, or releiving his command and taking his men back. She seems to want the control and authority, and maybe she's an expert at bending him.
I don't think she's a cylon, that would just ruin it. She has to be human.
3 - The cylons are god damn geniuses, and they let the Pegasus survive because they know She's wacked and that her and Adama will jump at eachother's throats. Then, when they are busy fighting eacheother, in comes the damn base ships and rips em one. The pegasus goes down in flames valiantly.. yada yada ... <- This would suck though. Too easy of a plot.
Anyways, my 3 cents.
