two reasons...First...Carl had the worst and most dangerous job in all of organized crime. He kept the books (both sets) for a legit business which was family controlled. He knew all the numbers and in 1980 when major heat came down, he was a total liability Second, he could have possibly weathered that storm had he listened to what he was told instead of going rogue and trying to be above the fray instead of under the Radar. In the end, he had to go.