The article is either obtuse or deliberately dishonest.
Given that they deliberately took Dr. Szasz's remarks on the nature of mental "illness" out of context to smear libertarians makes me think it is the later.
FYI, Szasz was arguing that the offending priests should have been charged with crimes rather than placed in treatments centers as they were not suffering from "illness" but were criminals.
Szasz's article is here :
http://reason.com/0208/fe.ts.sins.shtml