Not just excessive charge up it could be possible for it to be stuck in its linear region and dissipate a lot of power as it's spuriously turning on because the

Not just excessive charge up it could be possible for it to be stuck in its linear region and dissipate a lot of power as it's spuriously turning on because there's a charge on the gate. I've managed to do that one on accident with a bad motor driving circuit. Though it was also largely caused by coupling on the breadboard.