UPDATE at 12:20 p.m. ET: Couch will remain in juvenile detention. He’s not moving to an adult jail, at least not yet. Ethan Couch returned to the U.S. yesterday after withdrawing his challenge to extradition from Mexico. He fled from Texas with his mother, Tonya, on December 11, 2015 and was located in Puerto Vallarta, Mexico two weeks later. Tonya Couch has already returned to the U.S. and is free on $75,000 bond. She faces up to 10 years if convicted for hindering the apprehension of a fugitive. Couch is facing a violation of his probation after fleeing the State of Texas and failing to report to his probation officer. This was after a video, that appeared to depict Couch at a beer pong party, went viral shortly before his disappearance. A condition of Couch’s ten-year probationary sentence is that…