Pictures of the catastrophic event are at The Firearm Blog. Squib loads are hella dangerous – at the IDPA match two weekends ago, we had a shooter with multiple squibs. Luckily, the RO heard the light round go “pop”, and was able to safely call “Stop” before the shooter fired their second round.
I will say I’m somewhat impressed with the XD in this regard. I’ve seen Glocks that KB’d in the same manner as this XD with a lot more damage to the gun and to the shooter’s hand.
Squibs are dangerous, and they’re why I don’t advocate reloading while doing other activities. The TV should be off, no distractions in the room, etc when you’re reloading ammo specifically because a moment of inattentiveness can cause a best case scenario where all you do is wreck your gun, and a worst case scenario where you’re seriously injured.