If the video is blown up to full screen, you can see two tiny flashes down by the diffuser. First on the left and then just before take off, on the right. Is this what we are talking about here. I would have thought it might have been a more constant and even flow of “warming” gasses as the wheel is turning for even distribution of heat, not a pinpoint explosion or the like.
The comments are one of the very best aspects of your site Keith. You have managed to attract a very knowledgeable, engaged and (for the most part) respectful community. Complainers about the conspiracy theorists may not have spent too much time reading political blogs!
I would like to add my support for the suggestion about voting for / against comments. Even if you do get many people down voting when someone supports a particular driver or team I think you gain another benefit of being able to create detailed profiles of your community… you can begin to develop an understanding of patterns of our behavior. In the future you may be able to mine that behavior for clues on how to get more activity on your site.