Real-life X-Wing launch (and what really happened)

Here is a short clip of a scale model X-Wing which, after completion, was launched into the sky. I'm just going to throw it out there and say the launch area looks like Tatooine which is a nice coincidence. Watch the 22 second highlight clip or you can see the full 5 minutes here ("Nooo, we lost R2!"):
Now, here's an ingenious editing of the video. I don't want to embed it into the post because it ruins the suprise.