The player placed high at most of the major Quake 4 tournaments in the world this year, including QuakeCon and ESWC. As a reason of his departure from Style, Sabian gives the financial conflicts which brought him a lot of problems related with his participation in events.
His official annoucement was made and shown for the public two days ago. You can read a copy of it below:
My departure from team style/function zer0 is due to the team’s management not having my best interests in mind. The team has had major financial problems in honoring their contract to me, and I feel frustrated and betrayed. I have been put in terrible situations including being told two days before an event, that there are no finances to support my trip. Things were not handled in a proper fashion and I cannot continue with a team that does not show a certain level of professionalism towards its players.
Source: Gotfrag.com