Pretty Martha Stewart-y with the uncrimping, pal. My comment was a subtle shot at Guerlain (and every manufacturer with a crimping tool) for you to catch me out. I am glad you did. (I still would like a 6.8 oz. / 200 ml Vetiver Sport EdT splash - ever more if it had a screw-on sprayer.)
You got me going because my only attempt at removing a crimped-on sprayer was with 1.7 oz. / 50 ml Malizia Uomo Vetyver EdT spray clocking in at $3.25 USD, making Vetyver the laboratory victim of choice. There is a substantial ring on the glass collar of the Vetyver bottle and visible crimping and 'folding' of the sprayer's metal ferrule beneath the collar. *Althought the Vetyver bottle itself is rather heavy in proportion to its size, the glass collar proved to be delicate and - snap! - the rudiments of a miniature Molotov cocktail.
To prove your work, I took an almost-depleted *4.2 oz. / 125 ml Vetiver EdT spray, removed the decorative ferrule-cover with thumb and forefinger (slight distortion to cover latitudinally - but don't worry - it easily returns to its proper shape), to uncover the soft plastic ferrule. Again, with thumb and forefinger, remove the spray head / diffuser to expose the pump mechanism. With pliers, grasp the sides of the soft plastic ferrule and apply a gentle, upward force. Then simply lift off the pump mechanism. Voila!
Vetiver was a fairly easy disassembly owing to the angular bottle. Incidentally, did you know L'Occitane's bottles have screw-on sprayers? Both old and new.
If Guerlain can make 'refills' (such as Chant D'Aromes) and optional sprayers for the Les Parisiennes - why can't they make screw-on sprayers for everything? This is one instance upon opening a box I would be more than pleased to see 'Some Assembly Required'.
What have we learned?
1. Some bottles can't be uncrimped. Some bottles can. Some bottles have screw-on sprayers.
2. Quarry and I have 'un-sealed' our fate. We will never be able to trade bottles on the Sell 'N' Swap board. Please forward our mail to the Basenotes' Oubliette.