Plot hole: When the policeman asks Kirsty at the beginning who came when she solved the box she says the Cenobites; she had no way of knowing what they were called. Frank only told Julia; Kirsty didn't hear it anywhere and the Cenobites themselves didn't tell her either.
Plot hole: The mover shouldn't have been pulled into the mattress because he didn't bleed onto it, which is what was required before, for Julia to come back.
Suggested correction: Something entirely else is happening at the end of the film, as evidenced by the fact the Pillar of Souls then rises from it... something which has never happened before. Therefore, the standard rules don't necessarily apply. Additionally, even if you want to argue that they do, the mattress is still totally covered in blood from earlier, when the mentally ill man cut himself on it... so one could argue that there was enough blood on it still for something to cross through.
