Hope you're ok. Think I'd have had an accident in my pants if that had happened to me
I've had pyrex glassware for years and never had a problem with it. I'd be wary of internet horror stories because whenever you Google something you always find horror stories, but I fully understand why you'd be reluctant to use one again.
I reckon your dish must have been damaged in some way (knocked in the cupboard or something)or had a manufacturing defect, this may have been invisible - I assume the stove top hadn't just been turned off or anything, Pyrex doesn't like direct heat. Unless as someone posted above Pyrex have cheapened their products recently.
Hope you manage to get our cook done with better results using a metal pan though.