This is not going to be very popular. However, I must agree with ASFlyer. Having been a former airline employee and seen all sorts of bizarre things happen on flights, the GA would NOT leap to a conclusion of drunkenness based on a single passenger's observation. It was something greater than that.

Unfortunately, as passengers, we don't always have the benefit of finding out the whole story. It would obviously be confidential and AS would never release the story behind the observed event.

I've seen passengers arrested upon arrival; I've seen people die in-flight; I've seen bizarre situations occur for many reasons. One time, while I was non-revving as an AA employee, the GA didn't move me out of first class before the late-arriving F passenger boarded. The F passenger assumed that the GA had banished a paying passenger to Y and started a long, loud tirade about how horrible AA was.