Even if you have gotten a password reset e-mail, and it's part of the twitter error, you still have to reset your password.
A number of Twitter users received password reset request emails from the microblogging service on Monday evening after being temporarily locked out of their accounts. Those affected were not immediately notified as to the exact reason for the password reset request.
“Twitter believes that your account may have been compromised by a website or service not associated with Twitter,” the email sent to users said. “We’ve reset your password to prevent accessing your account.”