HOLY SHIt,...your gonna have a bitch of a time getting that off. I ended up taking it to my mechanic and even he couldnt take it off.
At the end we got a torch, heated up that bitch and used air tools to remove the bolt. Once its heated up ( you will see it turn red ) its easy to remove with air tools.

The other tool your talking about is a large socket wrench. you leave it there while you crank the car and it will spin and catch onto the lower control arm which you think will loosen it.
It wont!. Only torching it will get it off.

good luck.