Was the explosion part of a sequence that showed Locke fiddling with a speaker, then getting zapped, starting to fall backward, accompanied by a loud blast of static?

I remember seeing something like that in "Next Week On Lost" right after The Whole Truth episode.

Forgive me if this seems stupid. But I recall the noise could have sounded like the start of an explosion. And they showed the blast door going down before Locke gets zapped.

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charlie98210
"Whoa!" she said. "Cry 'Havoc!' And let loose the dogs of war!"
And, like Banquo's ghost, they just won't go away.