By technology, you'd have to have a self-propelled floating camera. I'm pretty sure not even NASA claims to have one of those up there.

Think about it: the camera is mounted somehow on the rover, on an extendable arm. Since the arm is attached to the rover, any photo of the entire rover, even if it was pieced together, MUST show the extendable arm, at least partially.

Now look at the space between the rover and wherever the camera is, and explain what the camera could possibly be sitting on. This is not a question of technology but of logic and physical equipment on a planet that supposedly is uninhabited, and where no other previous bots could take the shot.