Is it possible to flip certain layers upside down?

Is it possible to make certain layers appear upside down?

Like at 1:15 of

You see that in this flying shooter, you normally are at the lower part of the screen shooting the boss at the upper part. But at 1:15, the screen flips upside down.

I do NOT need the "flipping" 3D effect at 1:18. I only need certain layers to be upside down instantly. Is this possible in C2?

Note: setting layers to rotate 180 degrees is not what I want, as that will be both flipping upside down and mirroring left and right. I only want upside down.

Hi — Did you ever find out how to do this?

— Unfortunately, no, but I guess someone needs to dive into the the SDK and play around with the buffer part a bit. I don't know if someone can do that...

— That's a shame. It seems like it shouldn't be any more complex to achieve this than the rotate 180 degrees function.