The problem with the atheists in foxholes theory is that it can be disproven with a single example. I will give you one. My father was a B-17 pilot in WWII. He was, and is, an atheist. His plane was hit by a burst of flak. It lost an engine, and was on fire. My father took shrapnel in his thigh. His copilot sufferd a head injury and was unconscious.
By sheer dint of will and the amazing fortitude of the B-17, he got that plane back to its base in Italy and landed it. All crew members survived.
I once asked him if he had called on God. He just laughed and said, "What God?" I was the one flying the plane, not some invisible God."
There is the example that disproves the cliche. There are many, many more such examples. It's just one of those things that people like to say, while having no idea whether it is true or not.
I will give you another: me.
If you think one example disproves the statement, you're not understanding it. The point of that saying is not that THERE ARE NEVER ATHEISTS IN FOXHOLES EVER EVER. "There are no atheists in foxholes" isn't an absolute statement; it's hyperbole to make a point.
I am pleased to hear your egotistical father survived the war by his piloting skills ( as a WW2 vet I salute his abilities and good fortune)----no doubt he can pinpoint just what gave him the ability to be so good as a pilot since his ego is so great----I would assume he never gave any thought to the possibility of a God who was protecting any one of the other crewmen aboard since your fathers massive ego took precedent over any other possible reasons for the B17 to survive that ordeal other than 'his' supreme abiliies---your story disproves nothing IMHO, just shows up one more braggart who was able to pass his beliefs down to his family who appear to accept his aethism with pride---some day we will all find out just who is correct and what do I lose by believing in my Redeemer and Lord--
Stay on topic. He wasn't in a foxhole. Foxholes are the only true path to God.