Gah, wish I had seen this earlier.
First step (ought to be in the instructions but is not), unclip the strap from the front of the mask. The clips are accessable from just inside the lense area. Pull the strap back and it is all too easy from there.
Slight pull up on the middle tab holding the lense in and push to the rear. Viola! (Pinch the middle tab.....ie Index finger to pull up the tab and then push from behind this tab with the thumb.)
When I got my Profiler I was less than impressed with the lense removal. Heard about how easy it was etc etc and I was stuck for like an hour before I figured this out. At the price of it I was less than enthused to try and force it...
