Did the airport police go overboard? Yes! But.. Post 9-11 air travel has changed worldwide. You are asked by someone working for the airline to deplane, you get your baggage from under the seat or overhead, get off the plane and work it out in the terminal period. You don't like the seating, food, etc. Book with a different carrier or take a damn train or car. Nobody is forcing you to fly.
And LH, when you buy that Barron let me know how the 32 gallons of avgas an hour at probably 7 or 8 dollars a gallon in Germany is working out for you! Let alone the 150k to 250k to buy it.