Or maybe they decided to cut a deal with Ares thinking it would help them win against Heracles but end up destroying Amazonia or killing someone who didn't deserve it. Then the Goddesses show up are like 'what did I tell you?!" and send them on a time out to Themyscira. The other option is they end up accidentally unleashing the monsters in Dooms Doorway and the Goddesses banish them to Themyscira in order to guard Dooms Doorway.