CALIFORNIA: Amanda Bynes was secretly discharged from a Malibu, Calif, rehab center this week. According to RadarOnline, the actress has left the facility where she had been treated for schizophrenia and bi-polar disorder over the last several months. ”Amanda was released in the last several days, into the custody of her mother, Lynn. Amanda is doing very well, in fact, she is doing great,” a source said. Lynn has a conservatorship over the troubled actress, 27. Her current whereabouts is unknown, but the source noted, “she is being closely monitored.” “If Amanda needs to get further inpatient treatment, she will,” the insider added.–SH