[After he gets over freaking the fuck out and finally notices Rin standing around awkwardly, he'll approach her himself looking really apologetic.]

Hey, Rin. Um, before you punch me in the face, which you totally deserve to do, let me say two things real quick. One, I'm really sorry about what I did to you back in our season. You didn't deserve to be dumped like that just because you were a robot.

And two, Len's fine. Deactivated, but fine. The one that got destroyed was a fake we managed to sneak in - the real one's hidden away.