User blog comment:Crazywarfire/Indoctrination Theory is BS/@comment-4503679-20120713174320/@comment-3258762-20120730085535

As for the superweapon thing, i have a (very weak) theory. Since most explosives are detonated with an electrical discharge, what could have happened was that Shepard shot off the protective layers on the cabling (which we saw was there) leading to electricity jumping around to the other now exposed cables, thus activating the Crucible. Very weak theory.