Hrmmmm.... I must be missing something obvious here. I can't get the lens element to budge no matter what I do. I couldn't find a pry point that worked, and have now gone so far as to entirely chip away all three of the glue segments. Still nothing. How do you "lift" the element out? I guess the next step might be to try to push it out from the other side, through the iris hole, but I have every expectation of scratching it if I do that.
Was I just unlucky enough to encounter one assembled with ultra-atomic-bond™?
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Got it out. I ended up cutting out a notch in the plastic body under one of the three slots where the glue had been, and prying up from there. Of course then the element popped completely out and I can't tell which side is supposed to be up for it, if it's not actually symmetrical. Now the fun starts...