Agreed.With the aggravation that can accompany case head separations, it’s just best to discard the brass after you pull the bullet, dump the powder and remove the primer. Having 50,000-63,000 psi close to your face is nothing to sneeze at. If you notice any other brass that is questionable, toss it as well. It’s just not worth it. Brass is a cheep expendable item when compared to the other parts it can have an adverse effect on.
When going through my brass while doing sizing, priming, or whatever if I come across any that look in any way odd; I toss them. I've been known to toss brass that otherwise looked fine but there was something about it that just rubbed me wrong. Don't know why. After a while you'll get a feel for how it should look and feel. If something doesn't seem right, toss it.
A fellow reloader taught me how to identify split and cracked brass by sound. Yes, sound. A split piece of brass, when mixed with good brass and shaken in the hand, will ring like a bell.