Yup. Its called a "ball" joint for a reason. It is designed to pivot in many directions. I have not looked at an MB setup closely, but with most cars the ball joint is rotated anyway when the wheel is turned. So it pivots both left to right when wheel moved up and down. And it twists when turning.

When new it might be pretty hard to twist, even with a pliers. But it will.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car