Answer
Yes, it is possible.
Srila Bhaktisiddhanta Sarasvati Thakura wrote that demons may even appear in the dress of Vaiṣṇavas. Therefore, anything is possible in this material world, and devotees must remain alert.
Everything depends on the strength of sincere devotees. If devotees become spiritually strong, they can protect the movement. The Lord expects devotees to purify their hearts, become deeply attached to the holy name, and develop into strong spiritual leaders capable of resisting forces that attempt to damage the Krishna consciousness movement while appearing externally as devotees.
History has shown that after Srila Prabhupada's disappearance, many challenges arose. Kali-yuga influences entered and caused considerable setbacks to Lord Caitanya Mahaprabhu's saṅkīrtana movement.
What will happen in the future is difficult to predict because Krishna has given the living entities freedom, and destiny also plays its role. The real counterforce is sincere devotees chanting the holy name.
The holy name does not act independently without instruments. Someone must chant it, embody it, and become an instrument of the Lord. Spiritually empowered devotees are needed to preserve the purity of the Krishna consciousness movement and protect it from such destructive influences.
