The fact that it was an orgy sways my opinion quite a bit. If it was a BJ from his girlfriend I would view it as much more benign.
To answer your question, in all honesty, I can say I probably would not have hosted, participated in and videotaped an orgy, especially with a 15 year old. I can tell you when I was 16 there was a 14 year old who had the hots for me and I completely blew her off because of her age.
As I said, maybe I am a prude?
What punishment would you suggest for a 17 year old who hosts, participates in and videotapes and orgy with a 15 year old?