He said his blood alcohol concentration went to above the legal limit. He used a single shot. Also, I thought alcohol was metabolized out at a certain rate.
180 pounds + 1 oz alcohol + 1 health liver (male) = 1 hour to metabolize (eliminate)

I can believe that inhaled alcohol enters the blood stream quicker, I cannot believe that one shot could equal the same amount of alcohol as 4 or 5 drinks (a BAC is a BAC, why would time matter) or that inhaled alcohol would be metabolized out of the body differently than ETOH that used an oral route of administration.

Any doctors around who can explain this?

I like your Nietzsche reference. I don't think Nietzsche knew many soldiers with PTSD or anyone who was the victim of a sexual assault, or on-and-on