The sculpture was not made of material which is meant to last, like stone or glass. It was made from dirt and rabbit feces. I assume this sort of statue falls apart after a short period of time.
Conservators are in the business of preserving art. This is their "mission". They do this so that the "culture of the moment" can be shown to future generations. This mission will have to "yield" (to be given up, to be abandoned). Why? Because the conservators are forced to accommodate the materials the statue was made of. The artist wanted the statue to decay quickly. He or she made the statue out of dirt and feces because these materials have a propensity (a natural inclination) to decay quickly.