It would seem pretty simple for demo guys to switch to pyrotechic fuses.
This story certainly isn't disinformation, just a musing by a very security-conscious sort with whom I had a discussion on this a long time ago -- about the time Clinton dropped the football -- when some guy scored an own goal in his garage after picking up the phone in his house as the feds closed in.
HOWEVER ... I truly was amazed by the Google returns. Particularly given the one chiming in of the PA on the "work accident" bit I happened to open. That -- and my hoping to get some comments or insights like yours -- prompted me to go ahead and post it.
Given the arresting disparity in Google returns, I do indeed believe someone's Sending a Message.
As with the Gore campaign (wherein Mr. Environment flooded a dam for a photo op, brought up the Love Canal out of the blue, let his friends at Oxy crank a seven-year pipeling itch with the Injuns in Colombia, fought with NOW and PP over his pro-life record and got locked out of his office by angry gays) it's sometimes hard to get the point across to the Totally Brainwashed Sorts you've worked so long and so hard to dumb down in the name of women's rights, black power, gay pride ... Allah ... or whatever other bit of balkanization works best.
If you wouldn't mind explaining (it's not my forte by any means) ... if pyrotechnic fuses would do the trick as end-run round the pulse, (1) is there any technology which likewise allows for Security Services to sweep an auditorium, building or perimeter clean of explosives rigged thus and (2) are there big drawbacks to pyrotechnics which make them undesirable as a rule?
It's possible to defeat this with electronic devices. Careful engineering is required, which I do not know the details of, nor would I relate it here if I did know.