Was it one of Rotondo's crew, who operated under him out of NY, but was in the NJ family? No. Without a doubt no. Was it one of the NJ based men who operated out of NJ or even other parts of NY? Possibly. It's possible this came from within. Like I said, the dentist, by that I refer to Jesse Hyman, being introduced to the family might have had something to do with it. Also, don't forget the possibility that Rotondo made a comment about Gaspipe Casso, which may have led to the Lucchese's ordering it. However, I personally doubt the validity in that. I'm torn between that and the elder Gotti being weary of Rotondo's power. If you're ruling out Gotti solely because of Sammy the Bull, I would say to think again. How do you know for sure that he admitted to every murder but Rotondo's? There might have been more. Jimmy's own family does not know the actual truth, so I guess the world may never know. It's a shame, though. He was a great man.