How Would You Solve This Life-threatening BDSM Dilemma?

The 35-year old American sissy met a 50ish Mistress for a BDSM session before he became my chastity slave. 

The session was held in an obsolete house in a small town in Europe. He put all his stuff, including cellphone in another room before he was handcuffed naked to two big columns in this room, which was empty except for two big columns standing in the corner. Mistress carried the handcuff keys on herself. All of a sudden, she had a heart attack and fell on the floor, which was about 4 meters away from him. 

Guess what he did to survive?

The Story Behind My Slave's Kinky Fetish

Below is a story from my Belgian sub.

His father died when he was just born. He was raised by his mother only,with strong influence of his mother. His mother taught him how to respect and adore women.He likes reading and has read a lot about mythology, divine women etc. He could not agree with me more that women are superior.