Would it be possible to fake in Illustrator, or in some other vector-graphic designing software?
'Faking' at least 5-15 degree head turn should be possible with Photoshop or Illustrator. The PSD/SVG output has all the layers exposed and split.
Actually I was referring to faking a character's "rear view/back" that the OP was talking about.
Would it be possible to ask how to do that exactly in more detail if you know how? That sounds like something that would be really useful to be able to do before the feature is fully implemented.
Use transform/warp for each layer, basically. Here's a quickly done example:
Whoa, neat! Which tool does that? That's really well done.
No special tool is used, just free transform and other transform variants (perspective/distort/skew/etc). This is done manually.