I have dealt w/ it. It's still stuck...but if I grab a small small screwdriver and pry it where I can, it comes up. It's hard and it could be filed down. So far I have not filed it, and probably will. I've just used my hand to clean out the basket, but I'll eventually need it out again when it's time to clean out the basket in the pump. Good luck.
Oh, there is enough space in two places for a small screwdriver,,,,gently pry and work it till it comes up.