The project provider framework only affects the project and the display of things in the project. I believe that IF this were possible, it would not be part of proejct providers, but VI scripting, and you would invoke whatever VI Scripting property/method from inside your project provider code.
I personally don't know of any scripting functions that can manually break VIs (aside from placinng an already broken node on the diagram), but the best place to figure this out would be the scripting community.