Think about it. He made me an offer to betray you. Specifically, to help make sure that robot got trapped in that room with us so he could deal with it.

If he knew that much, do you really think we had any chance of getting out to begin with? Even if I didn't take him up on it, the end result would have probably been the same: we'd all wake up in here, still trapped, and still running around on his whims.

I took the option that seemed like the best chance for my survival. That's all there is to it.