Okay, Terry. Let's forget about continuity in Acts and for that matter, in the NT in general. Personally, I think you're sawing off the limb your sitting on vis-à-vis any meaningful discussion of the Decree, but as a Jewish person, that's not what I find odd about the JW-isms in your post. (I actually agree with your end conclusion.)
Let's examine your assertion that Jesus "broke" the Sabbath.
The liberal Phariseeism advocated by the Jesus character became normative Judaism. We can argue about how this happened, but the fact that it did happen is beyond argument.
Claiming that Jesus "broke" the Sabbath via healing, allowing his disciples to pluck heads of grain, etc. is therefore not materially different than claiming that a Jewish dentist, pediatrician, etc., "breaks" the Sabbath by responding to emergencies today, which is absurd.. The circumstances for rendering the Sabbath either hutra or dechuya as well as the arguments for why that happens are virtually identical. The idea that Jesus "broke" the Sabbath has its roots in the ugly, anti-semitic underbelly of fundamentalist Protestantism, were it is advantageous to portray Sabbath law in the worst possible light. And JW's and kindred groups thrive on that stuff.
Jewish scholars have a different take on the controversy stories:
"A common misperception is that healing was permitted on the Sabbath only in the most extreme circumstances only when life was in danger. When this supposition is applied to these controversies, one inevitably concludes that the issue was Jesus' humanitarianism versus the inflexibility on the part of the Pharisees to bend the Law in the face of human need or suffering. But according to Mishnah, the rubic on Sabbath healing is "whenever there is doubt whether life is in danger, this overrides the Sabbath" (Yoma 8:6) The discussion shows how very lenient was the interpretation of "doubt" including ravenous hunger, a sore throat, or a pregnant woman's craving for food." (Salmon, Marilyn J. Preaching Without Contempt: Overcoming Unintended Anti-Judaism Fortress Press 2006 p. 90)
"It seems that the Evangelists had little idea about the details of Jewish laws, and only by careful analysis can we establish what lay behind their words. We must note that in all cases in legal debates about Sabbath in the Synoptics, the question of dispute revolves around scribal laws and whether or not the questioning Pharisees know these laws as well as they think they do. The debate about eating in the fields is of this order too. When people pluck out grain, if they then push out the kernel of wheat which is an unusual or rare circumstance (normally wheat is harvested in large amounts with an instrument) they do not violate biblical Sabbath rules." (Basser, Herbert W. Studies In Exegesis: Christian Critiques of Jewish Law and Rabbinic Responses 70-300 C.E. Brill 2000 pp. 26-27)
"To look at the Gospel accounts of Jesus' healing on the Sabbath in the light of Jewish teachings may help us to understand the behavior and attitudes to which these Christian accounts testify. They also show us the antiquity of laws which otherwise might be mistaken for late rabbinic innovations. In all cases, it is likely that Jesus' healing in itself constitutes nothing that many scribes or Pharisees, if not all, would have found as breaking Torah law." (Basser, Herbert W. Studies In Exegesis: Christian Critiques of Jewish Law and Rabbinic Responses 70-300 C.E. Brill 2000 pp. 17-18)
"It is an amazing fact that, when we consult the Pharisee law books to find out what the Pharisees actually taught about healing on the sabbath, we find that they did not forbid it, and they even used the very same arguments that Jesus used to show that it was permitted. Moreover, Jesus' celebrated saying, 'The sabbath was made for man, not man for the sabbath,' which has been hailed so many times as an epoch-making new insight proclaimed by Jesus, is found almost word for word in a Pharisee source, where it is used to support the Pharisee doctrine that the saving of life has precedence over the law of the sabbath. So it seems that whoever it was that Jesus was arguing against when he defended his sabbath healing, it cannot have been the Pharisees." (Maccoby, Hyam The Mythmaker Paul and the Invention of Christianity Barnes & Noble Publishing 1998 pp. 33-34)