Towards the end of the movie, when J and K are trying to shoot the spaceship with the bug on board. When they show a shot of them standing together from the front, J is standing on K's right, but when they show the same scene of them from behind, J is standing on K's left.
Your wrong about this clip it is not a slip up, watch the scene carefully and you'll see when they shoot the craft and it's burning back it makes a circle and they have to turn around. That is why they appear to have flipped sides.