I had a .223 case stick in a Lee FL die a while back. I used the stick it in the freezer for an hour, and then loosened the top nut, and used a puch. The case did come out. The decapping rod looked like a nail that was caught in a knot hole it bent pretty good. Though an email to Lee, and a new one was in my mail box a few days later.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.