Now, I'm not complaining about it, as I understand it's comic/DnD/plot-physics and thus cannot be explained and doesn't need to be realistic, but...

There's no way that an arrow through the nuts would be able to suspend Roy's entire body, especially if he's wearing medium/heavy armor. And I'm not sure if the arrow could even pierce the apparently rockey wall(and it if was dirt, it'd just give anyway).

I'm just being nit-picky here, so don't take me too seriously. It's mostly in good fun. Fantasy physics can overcome any obstacle!