Here is an interesting ruling from the Constitutional Court that these four officials impeached by the DPK controlled National Assembly should be reinstated:

The Constitutional Court of Korea on Thursday dismissed the National Assembly’s impeachment motion against Choe Jae-hae, who had been suspended from his duties as chair of the Board of Audit and Inspection, and three prosecutors, reinstating them immediately to their positions.
Thursday’s rulings were seen as a potential indicator of how the court might approach key issues in President Yoon Suk Yeol’s impeachment trial, including his claim that the main opposition party has obstructed state affairs by impeaching key administration officials.
The court had yet to announce the date for Yoon’s verdict as of Thursday afternoon.
Yoon has argued several times during his trial that the main opposition Democratic Party’s attempts to impeach these four officials were among the reasons behind his decision to declare martial law, claiming that a succession of impeachments of high-ranking officials has paralyzed state affairs.
You can read more at the link.