I pried mine apart with a long narrow breaker bar. Really lube it up to get it to soak into the rust. You only need to pry the knucle apart a little.
Use some Anti-seize lube when you re-install incase the front end has to come apart again at some point.

95 Contour GL. Bought new. BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids. Looking for 15" alloy rims-PM me. 180,500km's so far.