I'm a little surprised a 03 has a variable vain turbo which are bad about not varrying if you do not get on them hard. I would find something that dissolves carbon and spray it down in the hopes it's just stuck and the motor is still good without taking it apart. You should be able to get to the arm that moves the vains by taking the activator off, not apart. Apply 12V to the motor if you separate it from the turbo to see if it will move the yolk. You can buy the center cartridge if you cannot get the vains to move for less than $200.
