I don't see how it's censorship? You just see the bodies for like 2 seconds less because it fades to the cinematic shot of the candle/fire. I think it works as symbolism for the infernal ritual, his power comes from the hells. Don't know if that was the intention but it's what came to my mind.
In the script, this moment is literally described as some kind of "crazy sex" or something like that. No, it's definitely not an infernal candle. I think they tried to make a smooth "beautiful" transition of the scene, but at the same time they hid the part of the animation that was the hottest in this scene. There is no infernal subtext in this, be sure.
