For those who don't know, Dinosaur Planet had a really really complicated story compared to Star Fox Adventures. Characters you thought were friends turn out to be enemies and it's not entirely clear who the true villain is. I think some of the voice acting that we have from Dinosaur Planet never actually gets used in the game, so this might have been an unused plotpoint.
Given that some people may be playing a build of Dinosaur Planet for the first time, this probably counts as a small spoiler, so I won't say much more. Anyway, StarToad64 made this quick animation of this surprising scene.