Bad move in my opinion, they should have footed the bill for the more expensive, underground station closer to the airport. However, I'd take this choice over not having a station at all.
Here is the story from the Washington Post: http://www.washingtonpost.com/local/commuting/airports-authority-set-to-take-critical-vote-on-dulles-rail/2011/07/19/gIQADdEaPI_story.html (http://www.washingtonpost.com/local/commuting/airports-authority-set-to-take-critical-vote-on-dulles-rail/2011/07/19/gIQADdEaPI_story.html)
I agree bad move
So much stuff going on with the Silver Line. First it was the Tysons Tunnel fiasco, now this.
I agree with Oren, however I have a different take.
I say MWAA made the right decision, and not because it will save the project and reduce costs. It was the correct decision because the station they planed on building in the ground would have been esthetically and architectural inferior to what should have been built. You don't build a subway station in front of a building that is a historical land mark that look like a highway culvert.