I am posting this partly because I think it's being downplayed.
The OP says due to disruptive passenger. At the following CBS link, American Airlines said disruptive passenger and the responding FBI said it was medical reason. http://6abc.com/travel/london-bound-plane-diverted-to-phl-due-to-medical-incident/2929855/
It sounds like someone’s medication over-reacted and they became disruptive on the flight. You are correct...the airline is being very quiet over what the passenger did to cause this.
One Brit witness did comment that this was a woman, and she was jumping over seats and yelling at passengers....scaring them to a great extent. The witness also said the crew did try to sedate the woman, and it had absolutely no reaction on the woman.
The airline had the passengers picked up at the airport and taken to a local hotel, and would restart the flight after crew-rest.
Were they from a s***hole country?
I always believe everything the FBI says. NOT. I dont imagine she was yelling things in Arabic, was she?
I dont think they are down playing it, I think giving us a story that sounds better than whatever actually happened out there.
Blanket party...