The INTJs I have known (and there have been admittedly few of them) have not blown up ever. It seems like INTJs just don't blow up. They act as if. If they want to be happy, they act as if. If they want to be confident, they act as if. The few feelings they have are eaten and it would take an enormous amount for them to be overwhelmed by their feelings. I could see them dying of cancer at an early age or maybe becoming a serial killer, but not blowing up.