[Neidermeyer]

big hammer (3 or 4 pound .. preferably dead blow) ... pickle fork ,, possibly dry ice...

[WellyP]

Good thought with the dry ice.

[bamaintx]

Take two hammers ( not claw hammers) have someone hold one tight to the side of the spindle arm ( place where the ball joint shaft goes through). From the other side hit the same part of the spindle arm sharply. May take more than one blow. The heavier the hammers the better.