We are sorry, but there is absolutely nothing that you can do.  The hair is usually so caught up in the motor that the hair will simply have to be cut free.

You will of course have to throw the hairdryer away and buy a new one.  When you shop for your new hairdryer it should cost between $80.00 - $100.00.  Any open heat vents leading to the motor should be covered by a fine wire mesh.  If one of these wire mesh guards should come off, replace it before you use the hairdryer again or your hair may get sucked in the motor.