This isn't really feasible given that you publicly posted the passwords to the emails (not the Posting Game accounts!).
Once you lose control of the email, you also lose control of the posting game accounts associated with it. Robots could and almost certainly will search the Internet for instances of "Password: insert any string of characters here" to see whether they can sneak into somebody's emails, and steal personal information. I doubt they'd care about the Scioly.org forums, but once somebody else has changed the password to your email account, you'd need to make a new email for the posting game accounts (or you'd need bernard to change the settings so that the email doesn't matter). And to that end, it'd probably just be easier and much less work for all of us to do as SilverBreeze said.