Obviously, that clip has been stretched to increase the time that the "X" event is visible, and it has been repeated to show it twice. It appears that the software he used to stretch the clip interpolates (it creates and inserts additional transitional frames), rather than repeating frames, for a smoother effect. So, I may have misinterpreted the altered clip, but the clip is most certainly not fake, as you assert, only misleading.
I suspect that you are right about the interpolation of frames. That particular clip is misleading, however, and is not an accurate representation of the aired clip. This link shows in excellent detail what is wrong with the clip.
The original, and accurate clip, appears here: