With approx. 6-7 hrs of driving today perhaps best to pass to Caldy sooner rather than later.
The general principle of the Nixon Ball involves some form of cheating which at first you might have appeared to have gotten away with only to be rumbled later on and be penalised accordingly.
Specifically - Exception 12:
If, owing to the unreasonable proximity of condominiums or other occupied dwelling along the boundary of a course, a player shall, upon making a wayward tee shot, hear a splinterrng, cracking or shattering sound, or some similarly alarming or worrisome noise, he may at once declare his ball "unadvisable to play" and immediately tee up and put into play in its place an "expedient ball" without assessing a stroke or incurring a penalty. However, during the remainder of his play on that hole, the player must behave as if his earlier misdirected shot never took place, and if he sees the affected homeowner or is confronted by him and betrays any awareness whatsoever that the mishap occurred, either by a verbal expression of apology or regret or a physical gesture indicating frustration, embarrassment or disconfiture, then the stroke for his original errant drive shall be counted and all applicable penalties shall be assessed.