"I thought everything went into a container on 74s."
Not everything. You can have netted cargo, live animals, cars, etc...
Re explosive decompression...
I think people are failing to realise how much force is on the fuselage at altitude. With a differential pressure of say, 8psi (8lbs on one square inch), on a square metre of fuselage skin, that's about 12,400 lbs of force.. i.e. about 5 and a half metric tonnes (someone check my calculations, please :P).
Rgds.
NSEU