External cshtml

If I created a dynamic module am I able to pull the Detail view template out to the file system?

Yes, you can:

1. Create a subfolder under Views, named as your dynamic content type (in singular)

2. Create Detail.viewname.cshtml for the detail view or List.viewname.cshtml for the list view - viewname can be anything you choose. If it is the same as the dynamic content type name, it will override the template defined in the backend. Otherwise, backend and file system templates will co-exist nicely.