How to Deal with Password Protected Excel Documents During Office Worker Publishing?

Curious if anyone else is experiencing issues with Password Protected Office documents while using the Creo View Adapters Office Worker? I understand documents with passwords are not supported, but when they show up, they block the publishing queue and prevent all other jobs from being processed until someone connects to the Office Worker machine and picks Cancel from the Office prompt. Maybe someone has a better idea on how to kill these stuck publishing jobs?

Is there a better way to manage these files in Windchill to support a more efficient publishing process?

We have been talking about creating a new document type or adding a new attribute to a document type so we have a hook we can catch in the publishing rules. Seems like a good plan, but it would be dependent on the document authors either picking the right document type or choosing the appropriate value for an attribute.