Temporarily suspend a user account?

Hello,

    Is there a way to temporarily suspend a user account?

    I would prefer not to revoke login privileges since that will break
things that mine pg_users and pg_shadow.

    I also am trying to find something that is completely reversible, so
something like setting connection limit to 0, which would lose a
potentially customized connection limit, doesn’t work.

    We do this in MySQL by reversing the password hash then running FLUSH
PRIVILEGES; however, that doesn’t seem to work in PostgreSQL/pg_authid
as some sort of cache prevents this from taking effect.

    Has anyone else solved this issue? Thank you!

-Felipe Gasper
Houston, TX