I've never removed a servo myself but TIS 2000 servo removal info does say remove master cylinder, detach pedal spring and press piston rod pin from fork. Remove servo with support bracket from bulkhead.
It also says "Important - Brake servo and support bracket adhere to bulkhead as they are inserted with sealing compound". Adhesive compound is supposed to be applies to front and rear support bracket contact surfaces of new servo. Maybe you know all this, just thought I would pass it along.