Unconverted 2D Shots in 3D Movies

[UFAlien]

A common criticism levied at converted 3D movies is the perception that it's not really 3D because "it looks the same with my glasses on or off". Usually I reject that notion - perhaps it's just subtle 3D. I figure, "no way they didn't even bother TRYING..."

I was wrong.

I was playing around with methods for taking 3D screenshots from Blu-rays and testing them out on Piranha 3D. Not a great conversion by any standard, but I was pretty surprised when I came to this shot in the climax:

[Show spoiler]

That's a direct capture from anaglyph output. There's no ghosting or color fringing anywhere. Nothing. Switching back and forth between right and left eye views produced the same image. This was it; the holy grail of bad 3D conversion. A completely untouched 2D shot left in the middle of a 3D movie. The climax of the movie, no less.

For comparison, here's another shot they converted:

[Show spoiler]

Anyone else notice any shots that were flat in a 3D movie? Bonus points for evidence!