Do you think head transplanting will work?

I do not think it will work this time but one hopes it does for Spiridonov's (patient) sake.

This image won't be leaving me for awhile:  

Whereas Ren’s team could swap the severed mouse heads with their hands, Spiridonov’s head would float across the operating theater to the donor body on a customized crane, hanging by Velcro straps. Surgeons would align the spinal stumps and bind the two ends together, using peg to fuse Spiridonov’s spinal cells with the donor’s.

I hope it works for his sake, too. And yes that is a vivid image.