How does one share Samsung camera "Virtual Shot" (3D spin-around) photos?
Othr than an MP4 export, you can't. You have to take your photos in Phogy (app, gif, or mp4) or Fyuse (web or gif). Both are lower in pixel quality (slightly) but allow for sharing the interactive experience. The pro version of phogy has higher quality but still lower than 4k. 

I hope someone makes a parallax  player that takes raw videos, then all video cameras could share it.