Hey Steve,
Sorry for the delayed response. Yes, if you believe your master password has been compromised, you have two options. You may go to https://steemit.com/@stevestrange/password and generate a new one using your current master password. If that does not work, you'll need to use account recovery, which will allow you to get access to your account again.
I hope one of these two options will help you figure out the issue. Please let me know if you have any further questions.