@shoker
I'm undestand your point, It's don't have correlation with the fight between Kaneki & Arima, But i think it's okay cause he's the victim on that incedent, The Author already strengthen steel beam incident by reveal that Furuta is Souta, Also there no way Rize be the one who reveal about...
@shoker
Nah, It wouldn't make any sense if Arima was the one who dropped the beams.
That time Arima is working together with Eto as Aogiri's One Eyed King, While Furuta already started to help Kanou's objective to break the birdcage and use ghoul power for medicine, That's why the ending endup...