There are even great Rishis who have laid down that even preceptors, if addicted to evil practices, should be punished. But there is no recognised authority for such a holding.
आर्षमप्यत्र पश्यन्ति विकर्मस्थस्य पातनम्। न तादृक्सदृशं किञ्चित् प्रमाणं दृश्यते क्वचित्॥