Where the Internal Revenue Service is concerned, you're either single or married – you can't be both. If you're married, you can't file as a single taxpayer, and if you're single, you can't file as a married taxpayer.
You are filing a return that is basically wrong. You cannot file as Single, you can file as Married Filing Joint or Married Filing Single (you will still need your spouse's information, so you cannot e-file). If you have not mailed your return yet, the best way is to mail in your return as Married Filing Joint along with the ITIN application.
