>>6327329The hips are on a sort of tube-encased ball joint, like on some gundam kits and transformers. You can pull it a few mm out to the side, and then get some lateral motion that way.
If you pull the hip joint out a bit, and it's too tight at the end of the socket tube so it snaps the ball joint back in deep, you can shave just a little bit off the sides of the gap running down the lower length of the socket tube, and it will slide out to the end and rest there snugly without snapping back in unless you want it to.