I have tried dial spinning for some facsimili of real persons and it doesn't always turn out as expected.  In many cases, images and head obj would need to be loaded into a 3rd party app to modify and mold the mesh without changing important vertices.  It might even be easier to create the morphs in that fashion.  Facial expressions can be manipulated with the dials.

But, without a full facial and side profile you will not get anywhere close to an actual representation of your subject in 3D.