Detachment vs Dispassion

He{after the demise of his grandmother} : I was able to go through the process because I was able to detach myself from the scene and observe what was happening. If, even for a sec, a stray thought had come in that this is my grandmother, I might have collapsed.

All what I heard of what he said was the word 'detachment'. I was not very comfortable hearing that word. Why was I uncomfortable? Is it because the first image that formed in my mind was that of attachment? I had to negate something to get detachment.

Would a better pick be dispassion? I have absolutely no clue. Maybe I will... when I evolve some more... :-)

Picture Courtesy : katiessweatylife