i just googled, it's Pivot Ministries. Pivot is not an acronym, it refers to the deinition of pivot - a turning point. it sounds very intense. but so was the Teen Challenge and he bailed on that.
you said if the using keeps happening...what does that mean? ONE more time? five? we can call it a slip, a slide, a relapse...bottom line, he used again. intentionally. whatever he's doing to "stay clean" ain't working, or perhaps better said, he's not working it with enough commitment to not use again no matter what.