According to Osho, surrender is a joyful, conscious melting of the ego into truth, not to a person but to existence; it brings freedom, intelligence, and love. Submission is fear-based obedience to outer authority; it suppresses the ego without transforming it, breeding resentment and slavery. Real discipleship asks for understanding, not parroting or pious bargaining; it's not 'doing good' for reward but awakening.
Surrender means freely trusting life and letting your small self drop; submission means being forced to obey and staying small inside.