I'm not sure you'll have enough room to use the separator tool. Mine was pretty well stuck in there at first. How did I get it out? First spray some penetrating oil on the top of the ball joint. Next, go to home depot, buy a 10' piece of steel pipe, and have them cut it into 6' and 4' seconds for you (so you'll have 2 different size "tools"). Then, position that 6' pipe over the control arm and under the subframe, and push down. It'll come right out. I tried a 30" wrecker bar first, but it just bent. (I guess I wrecked the wrecker bar...)
Need to get off the axle nut but it's on REALLY tight? Grab your 2' breaker bar, slide that steel pipe right over it, and presto... you now have a 4' or 6' breaker bar. Got a lug nut really stuck on? Same drill... 19" socket, breaker bar, steel pipe over it.. cranks right off, even one-handed.