I don't think he can. Last I checked, the TARDIS is still here. [He glances over his shoulder for a brief moment.]

And Proctor's still a statue. Xion and I need to get a wee bit further in these caves and see if we can find out anything about them, I think. Maybe if we figure out what's going on we'll be able to turn him back again.

[Although, to be honest, at this point, he has no idea how that'll even be possible.]