That looks like an early model Leo Vince....... I can assure you it is not surprised to look like, or fail like this. If you have a resil failure due to heat( only way it can fail normally is bu heat) it would relieve the presure, and have small poke through. I can azure you someone tossed in a very big firecracker, or poured in some flammable liquid, than then self ignited as you rode home. This is evidence of catastrophic failure due to an I contained explosion...... Do you have an angry ex?????
Seriously ........ Someone made a pipe bomb. I do not think lv have seen anything like this before. More to come as I get of the iPhone.