imhififan
yes, you show a type, like mine and most, that does unscrew, and perhaps all the way out is a possibility, that would be the definition of dumb luck.
The link OP posted,
perhaps he just thought they all looked/worked the same, so he just posted that one, it just happened to be the rare one that does not unscrew.
IF this goes on any longer, we will need a photo I think.