After a slight hesitation, Mo Wuji still decided to let this woman down.
There were a few reasons why Mo Wuji chose to let this woman down. Besides the fact that Mo Wuji didn't fancy such brutal way of punishing someone, Mo Wuji needed to do things here. He needed to nurture the Darkwood as well as undergo secluded cultivation.
Mo Wuji just didn't feel comfortable having a woman pinned outside the hall which he was going to cultivate in.
At the thought of this, Mo Wuji lifted his hand to sweep that soul fire away. At the same time, he threw out the Scholar's Heart at the soul fire. Within seconds, that soul fire disappeared without a trace.
Following which, Mo Wuji removed the countless restrictions on this woman's hands and legs.