It got stuck one other time when I left the can on the gun for an extended period after shooting. I had to take the mount off the barrel (with the can still attached) and I soaked the the mount end of it in a cup of something, possibly WD-40, I don’t remember exactly. After soaking for a time, I don’t remember how long, I was able to twist the can off with no problem, just like it’s supposed to.
It’s currently soaking in WD-40, again.