So, for folks not familiar with the show. Here's some info on 'Athena" from the BSG Wiki:
Sharon Agathon
The Cylon who eventually comes to be known as Sharon "Athena" Agathon is a Number Eight humanoid Cylon copy.
She is first encountered by Karl "Helo" Agathon when he is stranded on Caprica. Initially assigned to seduce him by impersonating Lieutenant Sharon "Boomer" Valerii, as part of a Cylon cross-breeding experiment, she turns against her people and helps him escape the planet. Pregnant with Helo's child, Helo is shocked by her true nature but ultimately accepts her lovingly as the mother of his child.
Once on Galactica, she is imprisoned and long seen as a mere object. She frequently provides intelligence, but is severely mistreated by an interrogator from Pegasus who beats and sexually assaults her. Over time, she earns Admiral Adama's trust by helping the Colonial Fleet escape peril several times, and she is eventually appointed as a Colonial Officer and marries Karl Agathon. Agathon gives birth on Galactica, but her daughter, Hera, is subsequently hidden from her, because President Roslin considers the baby a threat to the Fleet. Agathon believes Hera to be dead for more than a year, but after learning the truth about her child during a confrontation with Valerii, she is able to regain her daughter from the Cylons with the help of Caprica-Six.
She later has to deal with Boomer returning, beating her terribly, seducing Helo and kidnapping Hera. This causes her to fall into a depression until she finally rescues Hera during a final battle that destroys the Cylons. Also she gets some revenge for what Boomer did by being the one to permanently kill her. Afterwards, she gets to live out a peaceful existence on new Earth with her husband and daughter.
So, duh, clearly a Cylon. So if we understand the game dynamic to be human vs. Cylon (as Town vs Scum) then he needs to go. If we look at it from a show perspective, Athena was one of the few Cylons who became loyal to the human cause.
Here is the main page link for the BSG Wiki for any interested.
http://en.battlestarwiki.org/wiki/Main_Page
I will post again with info on the Rezz Ship.