Gotta agree with this. Dan and Rorschach make up in the comic and film. Rorschach apologizes to Dan for being such a hard ass all the time. It made sense that Dan go out to try and prevent Rorschach from leaving Karnak by atleast trying to talk to him. So Rorschach DID have a friend in Dan, who tried to help him, made all the more tragic by the fact that Dan couldn't do anything to save him from Jon anyway. In the comic, Dan just lets Rorschach walk away, then he and Laurie walk away and bone. Neither Dan, Laurie nor Adrian know that Dan has teleported outside to Rorschach, so why would they all just walk away? Rorschach's leaving to tell the world what happened, and they all just walk away?
Though i like the way it goes down in the movie, from what i recall, i think they could have pulled it off better. What i remember is Dan going after Rorschach, seeing Jon appear, then he just stands there watching Rorschach and Jon talk, Jon kills him, Dan screams "NOOO!". I would have upped it a bit, by having Adrian tell Dan and Laurie to freshen up. Cut to Jon and Rorschach. Back to Laurie telling Dan she wants to leave, and he tells her that first he has to get Rorschach. He begins to walk outside, looks out a window(or the monitor) and sees Jon and Rorschach, he begins to run. Cut to Rorschach and Jon "Of course, must protect Viedt's new utopia..."/"Rorschach..."/"DO IT!!" Dan makes it outside, Rorschach explodes, Dan screams. Manhattan said he had no choice. Dan doesn't believe him. He stands in disbelief. Jon teleports away. Dan runs back inside and pummels Viedt, and the film continues the way it does.
But that's just me.