No, from what I can tell, it is moved to 0°/0° during activation of the Ku-Band antenna system, not during deployment - as soon as you power it on, the antenna will move - that is why the antenna is always powered down during deployment and stow.
When the power for the EA1 is turned on, it will remove the locking pins and search the master index pulse positions for each gimbal (116.5° for alpha, -23.25° for beta), after the MIPs are found, the antenna moves to 0°/0° - this all happens in EA1, without DPS involvement.