The patients participating in VH1’s Celebrity Rehab took a tough dose of reality in two recent episodes, wherein a former patient returned to rehab to smoke crack and create a ruckus on the roof. As the celebs looked on, Seth “Shifty” Binzer scrambled around on top of the treatment center, swallowing Ecstasy, smoking crack and looking completely strung out.

Finally, Dr. Drew Pinsky, with the aid of his staff, was able to get Seth down and into the center. The Crazy Town rocker remained contentious, but eventually quieted down. Shifty’s re-appearance at the PRC (Pasadena Recovery Center) became a stark reminder to current cast members of the show. His crack-smoking and roof-hopping spoke more eloquently than Dr. Drew ever has on the dangers of relapse and the mindset of addicts.

It was also a little disheartening to fans of the show, who rooted for Shifty’s success during his first season stint on the series. The Celebrity Rehab spin-off, Sober Living, began filming with Binzer in the cast. The musician left the set, however, and eventually winded up in a hotel room on a drug binge. Dr. Drew tried to talk him down from the ledge, so to speak, but Seth binged some more before finally arriving on top of the facility. TMZ reported the rocker missing in late July. Andy Dick is reported to be among the show’s cast.

Celebrity Rehab: Sober Living is scheduled to premiere next month.