I completed federal and state info, paid to file, but state was rejected for duplicate SSN (but it's mine). Can I e-file Federal and print state somehow?

Yes, you can e-file the federal return and mail the state.  You could also try to fix the state return if possible.  If you could share more information about the reject code you are getting, we can help.  

How do I e-file my state after I already filed my federal?

What does my rejected return code mean and how do I fix it?