Thanks for bringing over the vidcaps, Blind Freddy!

Hi Byoffer! First of all, regarding this caption...Who is in the foreground? Must be either Penner or Kent. Is that the focus of Artis' comment and who crossed the line?
I think he's addressing either Penner, Carter, or possibly even Skupin? But, why would he call out Skupin during the challenge? So most likely it's either Penner or Carter.

Artis had said, "You don't want to hear what I've got to say about it." And, Jiffy tells us that it gets personal, and then Artis responds, "You can keep all that mess to yourself.", and then Jeff Kent, who is still on the sidelines says to Artis, "Alright, calm down.", and I do think he's perhaps trying to diffuse the situation. So, my guess is that Artis is bantering with either Carter or Jonathan, as he's focused out in the challenge arena.

I think Kent hears it and then tries to diffuse it. I don't think Kent has entered the challenge at all in these shots.