According to Osho, no—the mind’s stopping is not a negative process; what matters is whether it is a lived experience, not a mere notion. A concept about spontaneity is still mind, hence not spontaneous. When stopping is experienced directly, spontaneity flowers by itself; when it’s only an idea, it remains a mental construction.
When your thoughts pause, it’s good—just make sure it’s something you truly feel, not something you only think about.