Board Thread:General Discussion/@comment-12425721-20130716195655/@comment-2211792-20130807091458

CedricP wrote: I remember that a Privaron Espada, the one who fought with Ishida, said that an Arrancar couldn't go back to his form after Resurrection, but i might be wrong. Besides, MAYBE, if I'm right with what Segunda Etapa means, Ulquiorra was the only Arrancar able to archieve SE because he was the strongest of the non-Vasto Lorde Arrancars at the moment, and he could still evolve. But I may be wrong, Ulquiorra might have been a Vasto Lorde and even there could be higher steps in Menos Grande evolution unknown by the Shinigami. Tres Bestia, Loly and Nel returned to their unreleased forms. I don't think Cirucci said that doing so is impossible, rather not as simple as when Soul Reapers just choose to deactivate their shikai/bankai.