How to fix faulty 3dm file?

 From:  jbshorty
1604.18 
Hi Brian. I'm not sure what's the point to model this in Nurbs if you plan to sculpt in polygons anyway. You could have modeled a nose in subd in just a few minutes. And the toplogy would be vastly superior to what you achieved by all this extra work. Unless the purpose was just for study???

jonah