The devotees of the Lord are always transcendental, even if they are sometimes found to have fallen in their behavior. The Lord emphatically declares in the Bhagavad-gita (9.30) that even if an unalloyed devotee is found to be fallen due to a previous material contamination, he is nevertheless to be accepted as fully transcendental because of his being engaged cent percent in the devotional service of the Lord. The Lord protects him always because of his rendering service unto Him, and the fallen conditions are to be considered accidental and temporary. They will vanish in no time.
Srila Prabhupada, SB 1.11.38 purp.