Things that are not dealt with or processed invariably build up to a point where they explode.

First, the pressure tries to release itself sideways, damaging the structures it invades along the way. As the pressure increases, the organis(ation)(m) gets sicker.

Eventually, the structure cannot contain the pressure any more. The more rigid it is – and the more it hardens itself to try to contain the pressure – the bigger and more destructive the explosion.