BRIEF-Bill Gross knew he was being ousted from PIMCO - source

Sept 26 (Reuters) - * William Gross' latest resignation from PIMCO was going to be accepted tomorrow and he resigned before that - source * There is a detailed succession plan ready to be announced at PIMCO - source * PIMCO was thoroughly prepared for Gross' exit, pimco was not caught unaware -source * Gross knew he was being ousted from PIMCO - source * Gross has walked away from PIMCO without a severance package - source * PIMCO's William Gross had been clashing with the executive committee a