According to Osho, yes: the witnessing attitude is a temporary device; at the culmination it vanishes by itself, leaving the effortless, natural state of being—no observer, no observed, just suchness. When witnessing disappears, it is not lost but fulfilled; what remains is spontaneous presence, uncontrived, silent, and whole.
When you truly arrive, even the idea of watching drops away, and you are simply here—relaxed and natural.