No you just got lucky. I tend to reward stupidity with paperwork that includes my autograph. I'm more receptive to you telling me you knew what you did was illegal but you didn't see me or just made a mistake. With me, sob stories usually end with you having something more to cry about. This is NJ. We all violate traffic laws. Admit that and we can both get on with our respective days. But every cop is different, for sure.
In #2, unless there was a no u-turn sign, you cut someone off, impeded the flow of traffic with a 17-point k-turn, or there was a visibility issue, it doesn't sound like you violated state statute.
39:4-125. Improper U turn Turning on curve, grade or place where view obstructed or State highway marked with no U turn sign Turning on curve, grade or place where view obstructed or State highway marked with no U turn sign. The driver of a vehicle shall not turn such vehicle around so as to proceed in the opposite direction upon any curve or upon the approach to or near the crest of a grade or at any place upon a highway as defined in R.S. 39:1-1 where the view of such vehicle is obstructed within a distance of five hundred feet along the highway in either direction; and no such vehicle shall be turned around so as to proceed in the opposite direction on a highway which shall be conspicuously marked with signs stating no U turn.