I had not heard of this find. From the article, it sounds like Spartacus attempted to break out.
https://www.blabber.buzz/conservative-news/1059337-incredible-archaeology-discovery-the-true-story-behind-spartacus-final-stand?
One version I heard was Spartacus scaled the wall by piling his dead against it. Don't know if that's accurate.
^I read that as well.