Get with SureFire, explain this to them - and see what they can do for you. Worst case they send you a new end-cap...I have to say that my confidence in my LX2 is dramatically less than what it was yesterday. I'm considering myself now among those looking for a less fragile alternative.
At the end of the day their brand is marketed as something you can put your life on - and I certainly wouldn't want to put my life on what you have in those pictures.
I would try and make it clear the gravity of your concerns and what a failed EDC light could result in. [No threats, just informational statements as to how you rely upon their light.]