It's true that dancers use a visual fix point, and that also works, probably better. I have no idea why. Do you?
Movements having goals is essential for the way our brain coordinates them.
However, turning in the opposite direction also works, and has a basis in the balance mechanism.
It can help but when dancing Salsa I couldn't simply remove dissyness completely from a dance parter by turning her in the other direction. It could help a bit, but not fully.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.