Yes I have committed a rather foolish beginner's mistake. I was removing my Pi 3B from the basic plastic case In order to install a Sense Hat. Well I forgot to remove the Micro Sd card first. "Why is this so hard to get out of here" I wondered a I gave it another hard tug and ....... SNAP!!!! A piece of something goes flying past my face as I realize this can't be good. Sheared that card right in two.
I figured the Pi would be ruined too, surely that socket is destroyed as well. NOPE, got off lucky, that little card holder is tough! Popped in my backup chip and I was off to the races again. That was a close one.
Now let's see what this sense hat thing can do....