A lot of people keep telling me they think deploying the landing legs on CRS-16 was the main factor in stopping spin.
Doing the math based on @elonmusk telling us legs weight less than Tesla S suggests leg deployment would have changed rotation speed by 25%, probably less.
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That is true but could the center engine gimble in the opposite direction of the spin slightly to affect it? it seemed like landing burn was way longer than normal as well
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On a symmetrical ship a vacuum this is definitely true. Pretty sure you could use a single gimbal to impart rotation about the center of mass, and drag or uneven inertia might cause a spin along the booster's axis. I'm not saying that's what happened, but I think it's possible.
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