Rossitron: To remove an emitter, use a flat razor blade. Like the ones you buy in bulk packs for scrapers. Heat the HS as best as you can, or leave it in the sun for a while. Slide the razor blade under the luxeon keeping pressure on it so it bends flat to the HS. You work it back and forth, trying to "cut" through the epoxy. Becarefull as your're applying force, as it will all of a sudden break free and shear off and fly across the room! (and your hand/razor will smack into anything else in the way). I've successfully removed a RB emitter this way. (heated the aluinum HS with a zippo, as that's all I had!).
Chimo: Cool info, I haven't checked the data sheets in a while. Notice how the new design the black case holds onto the back of the slug. That may or may not add much force (it can still flex and pop out), but Mainly see how the HS comes flush with the case and has an area where you could pry up directly on the HS slug. Pretty cool. Bad for existing centerting HS's though!