You want a theory?
Deep below the pentagon, there is a ultra-top secret laboratory where the world's leading biochemists engineer a race of mutated otters, a new sort of powerful soldier that could infiltrate enemy camps at will.
These otters do not only possess the highest military training in weapons and tactics, but also can chew through 5 in. of steel in less than a minute with their genetically improved front teeth.
Furthermore, they are able to deliver bone-breaking slaps with their tails...
However, during the process of engineering and training these formidable army, the scientists found out that the otters sometimes got totally lunatic. It was a matter of their bio-engineered brain cells not correlating completely with their Electronic Reflex Devices (tm). They called it the "blue screen of death", because this madness led to many deaths among the blue-backed gorilla training officers.
As a security precaution, the shadow government decided to implant these otters a strong yet unobtrusive micro-bomb that would explode at the first signs of madness. The bomb would just splatter the offending otter, and all would be well.
All worked out well, until the gorilla officers took Marty, the prized otter sergant who had, just the day before, single-handedly defeated twelve 14-year-olds at "Unreal tournament", proving his strategical efficiency.
Marty was a bit annoyed that day, because his chipmunk wife Susan had declined to give him his quality time the night before, feigning headaches.
The Gorilla officer responsible for bringing Marty to the Martian Proto-Council for review, Harry (called "Harry the hairy ape" behind his back) made the fatal error to take the route through the ground floor that would take him next to Mrs. Susan Zimmerman, a known lover of extravagant clothing.
At the same time Harry and Marty passed Mrs. Zimmerman's desk, the elevator at the end of the floor opened and the Automatic Processing Unit known as Elvis III walked out, lost in thought. Elvis III was trying to calculate the answer to the most important question this day - whether the hen or the egg was first. Furthermore, Elvis just came from a critical experiment at the time-lab, where the residual radiation filled his batteries with much unneeded power.
As Elvis III stepped out of the elevator, Marty's gaze fell upon Mrs. Zimmerman's brand-new otter fur shawl, and he stopped dead.
Officer Harry looked at the otter, thinking about how he was late already, and pulled him onward with a curse.
That was too much. Marty stared at the pelt hanging from Mrs. Zimmerman's neck, hearing the cursing ape, thinking about his quality time, and the damn 14-year old "Gunnerztopz" in Nevada that always beat him at "Rainbow 6".
Marty got mad.
The explosion was sadly multiplied in its power a hundredfold due to Elvis III's emitting time-and-space radiation very close to the explosion's core.
But of course, they couldn't tell you that, could they?
Berandor
EDIT: Spelling errors galore