This idea, as many other directed towards removing all responsibility of the Roman authority, as the Pilate hand washing or the direct blaming the Jews, are desperate intents to divert the attention from a basic fact: at this time, crucifixion was an exclusive Roman punishment applied to rebels against Rome (and slaves).
If the pauline Christians had invented an awful death to their Lord they would have chosen a less conflictive "prince of the Earth" than Roman authority and a less significative capital punishment than crucifixion. This is to say, less annoying for their proselytist intentions. For example, the Jewish authority or Herod Antipas.
In this way, their theology about the "princes of the Earth" would be the same and the proselytism in the pagan world more effective. Why the hell they had to invent the crucifixion with the related idea of rebellion and shame? There is not any reason to do it.
Actually if they were reading "codes" in what would become the OT as well as secret writings now lost to us then they may have felt they were forced into using crucifixion.
It is like Irenaeus claiming Pilate ruled under Claudius; his position for Jesus being 46 if not 50 years old when crucified forced him to make that statement as Luke set that the best you could get would a 34 year old Jesus in 28 CE. Getting to 46 years of age put you at 40 CE at the earliest. His position locked him in even if historical it made no blasted sense.
Also as Lena Einhorn, PhD (Nov.17-20, 2012) 'Jesus and the "Egyptian Prophet"' Society of Biblical Literature Annual Meeting paper shows there is some really squirrelly things going on with the tangental events in Gospels and Acts.
This observation is interesting:
"There are significant differences, but had the Egyptian been active in the 30s, instead of in the 50s, historians would undoubtedly have made comparisons with Jesus from Nazareth. The reasons are manifold:
* Like Jesus, the Egyptian had lingered in “the wilderness” or “desert” (ἐρημία).
* Both speak of tearing down the walls of Jerusalem (cf. Luke 19:43-44).
* Both had lived in Egypt.
* Both are described as messianic leaders with a great following.
* Both are perceived as major threats by the authorities.
* ”The Egyptian” is defeated on the Mount of Olives, where Jesus was arrested.
Aside from chronology, the one thing which most clearly distinguishes Jesus and the Egyptianare the circumstances surrounding their defeat: Jesus is arrested on the Mount of Olives, crucified, resurrected, and then vanishes. The Egyptian is defeated in a battle on the Mount of Olives, and then vanishes."
"That Jesus from Nazareth and Jesus Barabbas could be one and the same person is a proposition that has been made previously, by scholars as well as in fictional accounts."