It's indeed disturbing to read the recently released texts but on the chance that seungri knew about this situation, there's a possibility he was also going to take part in their 'actions.' Based on similar allegations (of seungri) it seems that he isn't the most gentleman type, and that he has little respect for women off camera. 

i'm a bigbang fan, and even i think this is terrible, i'm very disappointed in him. Recently he has been....lacking in the emotional control factor, and he seems on edge often.

Also he was a director there, so it makes sense that he knew what kind of people frequented there and what shady things happened.

I honestly believe that he only quit because it got exposed to the media....I also believe he knew and partook in the actions that where said by the woman pressing charges. 

Honestly, he should be subjected to a drug test....what do you think?