And of course, since that is the case, how is that when the camera slides over to the right, there's Dolliana sitting vertically, exhibiting no motion, hugging the right edge of that same seat? Hmmm?
For the same reasons that Rosa Key, Loretta Fuddy and Marilyn Briley are clearly hugging the aisle side of the seats.

The seats are very narrow. Any manikin next to Jacob Key would have to be either in the isle or half way up the window. No other options.
Maybe every passenger had a manikin sitting next to them. That's it there were only animatronic mannequins on the plane. No real people.

In #11, Mr Briley’s shoulder and arm, and Yamamoto’s arm and leg, overhang the seat left sides the same amount as Mr Key’s arm.
Also seen in cabin view:
http://www.freerepublic.com/focus/news/3428362/posts?page=117#117
Briley and Yamamoto didn’t have anything next to them to their right.
And neither did Mr Key.