Oh, how I feel for you. I was diagnosed two years ago with Dumb Butt Syndrome aka Gluteal Amnesia after a year of really bad hip pain. It sucks. The good news is that with consistent exercises, you should get your butt back so to speak. I have to wonder how many other cyclists and runners suffer from this.
ETA: Thanks for the head's up on the Running Time's article. I'll have to read that.