Flight scheduled to go from A to B became a flight going from A to C to D to B and passengers going from A to B were not informed until after boarding and additional passengers were loaded. Upon finding this out, a passenger simply makes a light-hearted comment and, to that effect, asked the FA something akin to: "if the plane was going to stop at multiple places (where before it was non-stop) then should he expect that they would be stopping at X, Y, and Z too?" [The tone was not even sarcastic as he was smiling and had a light chuckle when he said it.]

A few minutes later, the FA got the pilot who then came out and yelled at the passenger and told him to shut-up and not bother "[his] crew". And at that time the pilot had him moved to the back. Passenger complied and kept quiet. A few minutes later the pilot came back and kicked him off the flight. The passenger wisely kept his mouth shut and complied fully.

I hope he wrote a nice little letter to NW and got something for it.