Firstly the script HAS been re-worked by Terrio, and Affleck is extremely happy with it by all accounts. As for dropping out from directing he has publicly said that trying to direct the film whilst wearing the suit would be problematic and he would need the suit redesigning for ease of getting in and out... obviously though the way these suits are designed it would be near impossible with the current design to do that... so he stood down for logistical reasons... but eh, don't let that stop the trolls and people with an agenda making something out of this that doesn't exist!
Affleck simply said that wearing the suit would mean he couldn't give proper attention to directing – the guy wants the film to be the best it can be – incredible that people can turn that into a negative!
One thing I will say though is that WB need to sort their **** out... the constant leaks are shocking. Take for example the social-media uproar about Matt Reeves - the guy is in negotiations with WB to direct Batman... i'm also hearing somebody is in negotiations to direct Shazam – when was the last time you heard that Marvel were in 'negotiation' with a director? You don't – WB need to keep things like this quiet and announce when a director is assigned to the project and not give the trolls fuel for their bull****! Marvel have negotiated with director who didn't take the job, they've even had directors walk away from projects they were directing – but do they get the rubbish the DCEU is getting?