That derailed him for a bit but the last five years have been health issues that kept him on the sidelines quite a bit. He actually came back from his domestic problems and started to win again, three times in 2011 and five times in 2012, and then he started having all kinds of physical issues and didn’t win again until late 2018. It’s been his body not his head that has derailed him.
Read the Wright Thompson article. It’s been his head that has led to him putting his body in terrible positions, health-wise.