It had been a day since their little get-together; Leeteuk had been feeling down the whole day for two reasons: one, he was very hungover due to excessive drinking, and the other, he couldn't find any solution to keep his band together.
He and Siwon were adamant about leaving because the company fired their manager; both had ample funds to pay as a penalty for breach of contract. Leeteuk was the oldest and the group leader; even though they weren't successful for years, he diligently saved money from all their gigs.
On the other hand, Siwon was the new addition to the team, but he was paid the most because of his unique vocals. SK had invested a lot to poach him from their rival agency, so he still had money left.