It was a simple pipe bomb attached to a timer and a lock. They should have used some bolt cutters to remove the bomb.
how did they know it didn't have an anti-tampering trigger? what if it did and they took your great idea and ran with it? they cut it off, kill the man and the cop with the bolt cutters. meanwhile the expert who could have handled it shows up just about the time the peices hit the ground.
they had no idea exactly what they where dealing with. they had no idea how much time they had. the evacuated all who they could from the area and waited for someone who would know what he was doing.
unfortunately the odds didn't play out and the man died, the cops didn't kill him though, who ever put that damn thing around his neck did.
hindsight is 20/20 and it's easy to sit safely behind your screen after the facts have come to light and say what should have happened.
the people who where there made the best decision they could with the info at hand, and live with the consiquences.
to my way of thinking, if you look at the info they had to work with, it's my unexpert opinion that they made the absolute best decision possable in the situation.