Not sure, but I think then Brother John put his sister Sharon into a person they called Boomer to watch Adama, and sister D'Anna to tie up loose ends like Hera, and sisters Six (Sarah? Natasi?) into Caprica Six and Gina Inviere to facilitate the plan. Which was then carried out, resulting in the miniseries. So then, I think when Ellen got caught on Picon, he used other sleepers to get her onto Galactica. Obviously at that point the people to watch -- being the three leaders of mankind not stuck in the Colonies -- were Roslin, Adama and Cain. He couldn't have foreseen Adama's relationship with Tigh, which has always been a pivot point for the entire show, and will now save us all; he couldn't have seen the action of angels on Laura Roslin; he wouldn't have cared what happened to Gina. But that's what I think the Plan was. I guess we'll see a whole movie about it.
What excites me, before we get started, is the way the layers are starting to coalesce. The whole mono/poly thing, from another angle, describes the differences between these two great races: people who are in one place and are one person and then die, and people who live in many bodies and places and never die. From another angle, it describes the heart of politics, Colonial or otherwise, and that's why Lee's always been my favorite -- and Laura's, even though we don't like to admit it -- because he embodies that tense balance between the one and the many -- political as personal/personal as political -- the same way I used to talk about Cally and Barolay embodying viewpoints.
And off the political angle and into the religious one, of course, we have a classic Gnostic (Yeah, sorry, but I actually have to this time; "Maelstrom" pretty much directly stated that this is a Gnostic -- specifically Valentinist, actually -- story, and it's an area of my paltry expertise, and helps codify this episode a great deal) trinity where Archon (Fake God/Model One) Brother John Cavil the One thinks he's playing dice with the universe, but the Demiurge (Real God/Number n/zero/infinity), acting through His Angels, is gaming the table. The major political jump made by Jesus -- monotheism 2.0 -- was to eliminate the intermediaries of the priesthood and express the personal connection we each have with God (which was immediately rewritten by the Apostles after his death, to retain political power in the form of hierarchical priesthood), which is where the Gnostic heresy comes in. In this story, that role is played by Leoben (Two, note, the next thing after One), who tells Kara again and again -- both in real, rapey form and in angel form at the Maelstrom -- that she's there already, touching the divine Real God(s) and painting the sky, and by the Hybrids, who can't squash their perceptions down to three dimensions just like Sam in this episode and just like Cavil is pissin' him panty about, like the bumberclot he is.