Thanks for the write up! Dealer wanted to charge 2 hours labor to do this.
20 minutes is about right and I wanted to mention that I also found it a lot easier after pulling out the long plastic piece that runs along the top inside edge of where the bumper cover clips in. It involved 6 more torx screws and then pulling it out. This gave me more room to negotiate the clips.
I think it was the "Impact absorber, top" part labeled "2" here:
http://www.realoem.com/bmw/enUS/show...diagId=51_9789