Don't think that's the final product. Done via test mode. It would be like tz magnet testing and throwing a ball past it on the mini playfield.
The Facebook comments state that its the 1st code tested. So definitely not the final product. Seems like they were testing a mode that has a central magnet that throws the ball back into the slings. I expect 'normal' sling mode the central magnet would not operate.
(By 'central magnet', i mean what ever is grabbing the ball from between the two slingshot and throwing it back to the slings. It could simply be one of the two slingshot magnet itself is activated a second time to pull the ball back in - I can't see that being set as normal operation.)
