>>6 In the game, doing a takedown on someone sitting down when behind them does this suffocating move. Doing it in front will simply punch them. However, standing on the bench beside him will start the takedown, despite the barrier. That's something that should have been accounted for and wasn't, so I think it's more of a bug.
Here's another.
I did the same thing, except I got permanently stuck in the box.
It's transparent.