Even if Soojin gets declared innocent public will not feel the same way towards her. Gidle had a successful comeback and i hope fans would consider letting Soojin go it would be best for remaining group and another probably fans will get angry but Cube has lot of girl trainees they can replace with one of the trainees who is debut ready that was commonly done in 2nd gen groups where one member would leave for some reasons and new member will get added.
Also with Shuhua's problem about not singing any lines i feel it's best to let her go too. They already have Yuqi for Chinese fanbase. Fans are opposed to these ideas but think about Soyeon and Miyeon and Minnie and Yuqi whose careers are also on line.