When Jesus died on the cross, the temple veil was torn in two, signifying that the Temple was no longer holy. Further, Jesus said he was the Temple when he said "destroy this temple and in three days I will raise it up." You are requiring God to follow the rules he imposed on Man. He doesn't have to.
Jesus is clearly the passover lamb in Revelations, when John sees the "Lion of the tribe of Judah" in the form of a "lamb standing as if slain." That sacrifice was done once and for all. However, the fact that that Jesus remains in the form of a slaughtered lamb and yet alive shows that his sacrifice is continuing for all of us.
Finally. it was my understanding that in a passover sacrifice, the lamb is slaughtered and then the blood is poured out on the altar. Jesus was both the lamb and the priest, the blood was not taken to the altar until Jesus ascended into heaven. At that point his sacrifice was complete.
I am sorry, it's just when you look at the entirety of scripture, it just doesn't add up. John's Revelation is terrific imagery but doesn't make for a good basis for a theological foundation. Also, you assert infallibility to the new testament and I dont. The Temple veil and the resurrection of the dead at the time of the crucification have not been historically verified. I would think that those events would have been widely recorded.