Come on people, from what I am reading here it sounds like you work for Delta's revenue protection unit. In no way do I condone this sort of activity but in no way is it illegal. Show me a law that you could be charged with.
Two wrongs do no make a right but the airlines have not set the example of always doing the right thing. I can site everything from the way they advertise to how they bury things in the tax lines as prime examples on how the airlines try to pull the wool over the consumers eyes.
I do not agree with the saying that you should play by their rules or do not use them. Not flying is not an option in many cases.