You do not have to publish this question. http://dinonline.org/2017/10/29/gentile-images/ The rav is welcone to respond privately.
In response to your question I am utterly confused.
It seems according to your answer that relations with a goy as a one time thing is only an issur drabbonon whilst looking at her undressed is min ha torah.
So during the act if one had his eyes closed this would be an issur da rabbonon whilst opening them would be issur draisa.
Is this correct?
You are right. It comes out that the looking is worse of an issur than the actual act! This instance would be an interesting from of the gemora yuma 29a הרהורי עבירה קשים מעבירה .