Javert, Goblin King or not, kicking Jareth in the back of the knee while he’s holding a young-Jamie is not a good idea. I understand wanting to hurt Jareth in this situation, sure, but it’s not really fair to Jamie if he gets dropped because you made Jareth stumble. (Admittedly, this didn’t happen, nor do I think Jareth would allow it to happen so easily, but still, the point remains that it could have.) And you look far too pleased by Jareth being caught by Sarah.
That said, this arc is absolutely wonderful and I adore Jamie there blissfully nomming Jareth’s shoulder. ^^