Devise force logout for some users from Rails App

Is it possible to force logout for SOME of the users through Devise.

In my setup, I am using rails 4.1.15 with Devise 1.5.4. Sessions are persisted in db and there is no direct mapping with user ids. Is there a Devise way to logout against some of the users NOT ALL.

I tried resetting password as a proxy which logs out immediately but not always.

user_obj.update_attributes(:password => "some_random_string")