The basic plot of the new movie "Thirty Minutes or Less" is that 2 people kidnap a pizza delivery guy, strap a bomb to him, and make him rob a bank for them. This scenario actually happened in 2003, and sadly, the delivery guy was killed.
IMO, it's at the very least pretty insensitive to the family. I mean, this is a rather particular way to die, so it's hard to believe that the idea didn't come from that incident. It will certainly remind his family of what happened.
That being said... is it actually rude?