Gee you dont know your own strength!
Seriously though, that must have been a defective one. You said yourself you have done it dozens of times before.
MANY years ago, I was told to use a flame to unclog metal tipped ball point pens. (or run it under very hot water) I havent done it in decades so I have no idea and if the thing is plastic of course forget it.
I have very few gel pens so far-just the white signo, a gold, silver and clear sparkle. They seem to get gloppy points to me.
How often do you use them? Sounds like for years now.