However, in chassidic philosophy(not all sects, but most) if a person, usually the Rebbe himself but not necessarily, needs to do an aveirah to reach a certain spiritual level, he is permitted to do so.
Complete fiction, unless you are referring to the Admou”r meCreedmoor who believes that welfare fraud is the path to spiritual redemption of expired food stamps.
If anything, some Chassidim do not believe their Rebbeim are even capable of aveirois (also misunderstood, but anyway..).