The joints in the control arms are a thermal press fit. Most common methods of removal will damage or deform the aluminum arm, which is why Honda tells you to replace the entire assembly. There is a guy in California named Steve Ghent who has figured out how to replace all of the ball joints on the car. I would suggest contacting him and sending him your suspension pieces. His prices are reasonable and the new joints are very high quality. Steve is who i will go to when mine enevtually fail.