But alas, I ignored that, dispelled the formula, removed the spell... And erased the record of the vengeful spirit's sealing from every single scroll at once.

In the worst case, the seal could be broken entirely.

The vengeful spirit of Moriya, who burnt down numerous temples while chanting death to Buddhism, might have been resurrected as we speak—

Ah, but if thou thinkst about it... If he destroyeth some temples, that might be pretty alright!