No, I am not suggesting that the Centurion did the actual work of the crucifixion, but those soldiers were not before Pilate when the Centurior was called to check if Jesus was dead already. The Centurion was alone.
Who was an eyewitness that Jesus resurrected. Show me one and you have made a Christian out of me. Even the angel reported by Matthew was cheated out of being an eyewitness because when he removed the tombstone the tomb was empty. Now, how it got empty is the issue at hand.
If I appeal to the gospels as historical proofs of what is said somewhere else within the gospels, the name is contradictions.
And what would happen to the centurian and all the soldiers party to the crucifixtion when it got out that Yeshua didn't really die, he was bribed out of an execution? They would all pay with their lives. And you expect us to believe that all those soldiers would have entered into a conspiracy knowing that death awaited them once it became known they failed in their duty? Only someone not wanting to admit to the death of Yeshua and his resurrection (as he foretold) would believe that.
Firstly you just can't become a Christian, you have to respond to the call of G-d which I don't see on your life. He will have mercy on whom he will, and I don't see him offering it to one who believes nothing done by G-d is miraclulous.
Secondly you reject the testimony of the men who were there, so a priori you are unable to receive the truth.
Lastly you ask a good question...how did the tomb become empty? Since Yeshua said he would raise himself from the dead (a feat never done before or since) and that the religious leaders wanted the tomb secured so they could display his body after the three day period he foretold his resurrection would take placwe in, how did they fail in this endeavor?