Chaos' self-destruction was insane, truly.
When facing it personally, Damien could guarantee that he wouldn't have been able to do anything if he wasn't breaking the realm's laws. Genuinely, the only reason he was able to contain that force on his own was because of Existence.
Still, he did it and he did it easily, planting a permanent memory of his face in Chaos' mind. The current iteration of the Spiritual God was dead. Damien was planning to check his original containment unit to scatter any remaining traces of him as well.
However, the third island had been too far entrenched in the cycle of order and chaos. Eventually, people would once again feel discontent with peace and the creation of a new Spiritual God would begin.
Damien only made sure that the Spiritual God who was born would remember what happened to its predecessor and hide itself. The rest was up to the temples and their masters to figure out.