I just watched that DIA rendition, boy there is really a lot going on there. I noticed 2 Scott Totten things.
First is that totally dumb "Let's Do It Again!" that McGrath says at the beginning, but the video edit shows Totten saying it, not even into a microphone. Why would you even choose to edit the video like that and make it confusing?
Second is it just me, or is he wearing a fucking mouthguard the whole time?
If you look closely before and after the edit, it looks like he's looking back at Bruce who is also hanging back from his keyboard at that time and mocking the "let's do it again". I would guess that the witless wonder up front missed his cue or it didn't lineup well, so some clever editing and some inter-band snarkiness led to that. As for a mouth guard...I'm thoroughly confused and not sure where you are seeing anything close to that.