What's happening here?

https://decaps.legacysurvey.org//viewer/?ra=29.0805&dec=-53.6613&layer=ls-dr9&zoom=14

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This is a tidally disrupted spiral galaxy. Iā€™m not sure to where the other arm disappeared.

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Broken (i.e. broken) or crunched (i.e. its been pulled in closer to the centre of the galaxy and no longer looks arm-like)