Explain how that would work. You're not just throwing shit at the wall to see what sticks are you? You've thought this through right?As if the outside was already marked, measured, and ready to be "cut" by an inside explosion...
How would an explosion on the INSIDE of the perimeter column cut aluminum cladding on the opposite side of the perimeter column??? Did the explosive force come from inside, go around the perimeter column and come back towards the outside. Is below what you are suggesting happened?