Affluenza teen" Ethan Couch on Monday was released after two years behind bars.
Couch gained infamy after driving drunk and killing four people in 2013.
A psychologist testifying for the defense at his trial placed blame on his "affluenza."
"Affluenza" prevented him from knowing right from wrong.
He was sentenced to rehab and probation.
But he got 720 days in jail for violating probation.