I don't see any powder burns on his shirt or arms. So how the fuck did he do it and I don't believe M100's can be purchased in this hemisphere.
But if you had one in your mouth it probably would do that. We used them 30 years ago and they were the closest thing to dynamite I have used. An old timer told me they were equal to 1/4 stick of 60/40.
Its power levels you can't get anymore. A cherry bomb of old has more than anything you can buy now. We used to use 100s to see how far they would blow a hubcap. Good ones went over 300 ft. Your lucky to get 50 ft now.
Where's the blood spatter, people? I don't see blood spatter, no burns, nothing even remotely suggesting explosion of any kind. Hands, arms and chest free of blood, or injury. I smell an expert fake job.