Aristeo,cubert as a 2v2 team and gentleman as a 1v1 player leave ESC, because of their lack of time to play bw.
Moreover yoon left ESC, because there were some problems with him and the team.
He joined IFU (ex- Niceaff).
Source:
http://www.escgaming.de/index.php?module=changelanguage&langid=2&referer=module=news&step=comments&news_id=241
Thanks to GTR for making me curious and checking the ESC site