Q redactor? This is a howler. Q belongs to the oldest layers of the gospel traditions, but this story was tacked on to the Gospel of John at a late stage. As the NRSV puts it: "The most ancient authorities lack [these verses]; other authorities add the passage here [after Jn 7:52] or after 7:36 or after Luke 21:38, with variations of text; some mark the passage as doubtful."

But what I find really disturbing in your comment is "Ray Brown or other 'scholar'" -- Brown knew his stuff and educated whole generations in the English speaking world on the complex and  fascinating world of the New Testament. You seemingly not only did not learn from him but have  closed yourself against the blessings such generous and competent scholars dispense. "Who needs experts? We don't need no thought control!" -- exactly the outlook that gave us Trump and Brexit.