So...
Operation Re-Entry was apparently in operation from late 1969 to 1980 or shortly thereafter. It subsisted mainly on city funding and community support; there was also at least one federal grant in the beginning, probably more throughout its existence.
There appears to have been a death associated with it, a boy... "broken heart." Perhaps a suicide? Re-Entry claimed they tried to help him. The boy's parents do not seem to have blamed them at the time.
Operation Re-Entry did advertise itself as "Synanon-style." I believe
Warren Klein may have been the director who came from Synanon. There was a Warren Klein associated with Synanon and their attempt to open an auto repair shop in the Los Angeles area in 1966 or 68.
There were actually quite a number of drug rehabs opening up and already in binnis in Florida back then. Even for teenagers. Art Barker was, if anything, NOT leading the pack! He just jumped on the bandwagon.
Here are six, just from the Miami area alone, which were vying for Federal Drug Grants in the year 1971: Spectrum, Concept House, Here's Help, Operation Self-Help, Operation Re-Entry, and Genesis.