Zero was the benefactor of the decision to release. he was not the responsible party. The DA, th judges, and likely political pressure were who released the info, on his behalf.
after the pin is pulled, somewhere between the 4th and fifth seconds, the burning fuze reaches the primary explosive. How does a grenade go off when the fuze is unscrewed and removed? It doesn't.
So, why and how did this grenade explode unexpectedly? Maybe someone swapped a smoke bomb fuze for the grenade fuze? They go off as soon as the spoon is released.