Seriously, who else can Obsidian turn to? Sega shafted them, Activision is the new evil, Atari is dying, Take Two is a decent possibility, so is EA and Bethesda(and we'll learn more about this pairing next year)
Let's hypothesize that Sega drops AP and then Obsidian has to go and find a new publisher to pick them up and allow them to finally release the poor thing, what happens?