One thing doesn't preclude the other.
This photographer took the opportunity to take some photos during a night party where some models also worked as escorts (including Nata Lee, who acted like a sort of human pet).
Otherwise, there's no explanation for the dressed man in the background (who is not a model) walking away with one of the naked women. Unless they specifically wanted to suggest that these were stolen photos.
But in my opinion, the expressions of the other dressed women in the background seem far too realistic and don't seem contrived. They seem genuinely shocked to see Nata Lee reduced to a pet.
If this were an artistic performance, I think we would have had a backstage video, but there isn't one.
Furthermore, in this photographer's other videos, Nata Lee appears submissive for no reason related to the photoshoot, and there's the video on the boat where the photographer gropes her and slaps her bare butt for no reason related to the photos he was taking.