That definitely doesn't sound like a big deal to me! He probably didn't need that ear anyway...

Faust's childhood friend was bullied a lot and Faust used to beat up the kids who picked on him. His friend's dad was also abusive and he offered to go deal with him too only to find out his friend had mind-controlled his bullies to set his house on fire with his dad inside so... Just some fun childhood shenanigans there.