Justin Bieber's manager FINALLY steps in Fri-31-Jan-14 07:50 Share this By Jay-Jay FeeneyJUSTIN BIEBER made headlines again yesterday when he was charged with assault for allegedly attacking a limo driver in Toronto last month.And his toxicology report from his DUI arrest in Miami Beach is in ... and it shows he tested positive for marijuana and prescription medication.He had THC and Alprazolam in his system. Alprazolam is the key ingredient in Xanax (prescription anti-anxiety medication). Justin tested NEGATIVE for cocaine, opiates, meth and other drugs. Justin has pled not guilty to the charges.Now Justin’s manager SCOOTER BRAUN has finally stepped in and warned the Biebs to change his ways or quit music for good.Justin is yet to make a call on that, but in the meantime, we here at The Edge have quit his music. Last night The Edge Night Show with Marty & Steph took over 2000 votes and 64% were in favour of The Edge banning Justin Bieber songs until he gets the help he needs. You May Also Like Justin Bieber arrested for DUI Justin Bieber grinds Ariana Grande onstage and Big Sean is furious Justin Bieber: 'I'm retiring' Become a fan of The Edge on Facebook and on Twitter .