The hanging girl in the anime was Kudan (the girl Sousuke saved right at the beginning of episode 1). It seems to be a liberty Gonzo took as they insinuated she killed herself. In reality, she spent months recovering her mental and physical health, but the novels hadn’t made it anywhere near where we learn that at the time that the anime was made.
I don’t know if her showing back up later was something Gatoh had planned all along, or if he had forgotten the anime had hinted she’d died. I honestly don’t know how involved he was in that scene, and if involved, if he’d ever meant for it to be taken as an actual event, or just trauma.
As for Kurz, ah, yeah, he totally made a pass at Kaname, in the same way he did to Mao at the end of the season.