The Pauline epistles must be read in light of Acts 21.17-26 which prove that both Paul and the apostles never demanded that Jews stop observance of the Mosaic Law. For centuries this section of Acts has been overlooked dislpite the fact that many of Paul's letters had been completed prior to these events.
Texts such as Mark 7.19 have likewise been misread as if kashrut laws had been dismissed by Chrsist whereas Acts 10.14 show that Peter himself had kept kosher even beyond the days of Pentecost and never cosidered any commands of Christ as negating Jewish obligation to kashrut demands.
Arguments in the Pauline epistles are written to Gentiles, and his arguments against Judaizers regard the issue of the Gentile relationship to Torah, not the Jewish obligation. Romans especially is quite clearly used to prove that Gentiles who seek to find salvation by observing Torah actually break the laws of Torah by such an attempt. Paul never teaches that Law is not for the Jews, only not for the Gentiles. In Romans especially are the arguments used by Paul taken from the Torah itself to prove this.
Jews do not have a doctrine regarding being saved by faith or saved by works. They especially do not believe that Mosaic Law observance saves in any way, and Paul was trying to teach this. This was not a fracture in the early church as all peoples had their own customs and laws that others were not subject to. The fact that many Gentiles became Christian before the Second Temple fell is evidence that Mosaic Law observance was not a fracture of any type for indeed the leaders of the Church at the time were all Jewish and, as Acts 21 tells us, zealous observers of Torah. If this was a fracture then Gentiles like Cornelius never really joined the Church nor was the letter to the Gentiles at Acts 15 necessary.
The fracture had to be much later and is questionable whether such happened completely as the Jerusalem Church existed until the 500s and Jewish Christians in my family kept kashrut till I was born, raising me in it to the extent that I never ate cheeseburgers or had milk with a meal until I became a JW...and learned I was lactose intolerant as a result. All this was due to my abandoning kosher meals as a JW, from kashrut observance handed down by Jewish Christians for some 2000 years. I am not alone in this as there are thousands of people like me in California, Texas, and Mexico learning that they are Semitic and not actually Hispanic with recent discoveries regarding Sephardic ancestry lines recently made accessible through websites like Ancestry.com and the like.
It might be that Chistians felt better about how they treated Jews in history upon telling themselves there was a fracture, when in reality it may have never really happened. It is easier to lie to oneself and say the Jews divided themselves from the Christians to excuse what would otherwise be anti-Semitism currently dressed up as theology.
The whole concept of a Messiah is a Jewish one anyway. The majority of the Bible is made up of the Hebrew Scriptures, and except for Luke and Acts the entire Chistian Bible was written by Jews who according to Acts were Torah observant. Call that a fracture and division? That's like saying Diet Coke is not part of the Coca-Cola line since it doesn't have sugar as a sweetener like the other Cokes do.
Again not saying a fracture isn't there, but also not saying that everyone is being truthful with themselves on both sides of the Jewish-Christians issue.