It looks like the DPK is trying to set conditions to now impeach acting President Choi next:

A special committee of the main opposition Democratic Party (DP) said Tuesday it will file a complaint against acting President Choi Sang-mok for alleged dereliction of duty.
Choi has been criticized by opposition lawmakers for not ordering the Presidential Security Service (PSS) to cooperate with attempts by investigators to detain impeached President Yoon Suk Yeol.
During a press conference at the National Assembly, the committee slammed Choi for eventually allowing the PSS to block the Corruption Investigation Office for High-ranking Officials (CIO) from executing a warrant to detain Yoon.
You can read more at the link, but remember the DPK initially threatened to impeach Choi, now they are threatening this complaint instead. I think the rising approval rate for Yoon may make the DPK think twice about trying to impeach Choi. The Korean public seems to be losing patience with the DPK’s antics and increasingly siding with Yoon despite the martial law fiasco.