According to Waxangel and dailygame SouL is not a team anymore.
SouL former roster :
hyvaa
Last
SSanaEE
YoungJoo
SouL was a Korean professional StarCraft: Brood War and StarCraft II team. SouL stands for "StarCraft of Unbelievable Legend". It was formerly one of the eight KeSPA-recognized teams participating in Proleague under the name STX SouL. It was a eSF member participating in the Global StarCraft II Team League.
Source : http://esports.dailygame.co.kr/view.php?ud=2013121923393149250