There is good evidence that it sunk after the attempted unauthorized launch of a nuclear missile at Hawaii.
And, as we now know, the CIA went and raised it.
Or pieces of it.
The above idea is put forth without any background in modern logistics or strategy, so I am skeptical of it.
The nuclear forces do not launch in a vacuum.
There would be massive worldwide redeployment of logistical supports and active military assets, not to mention to complete mobilization of the reserves and co ordination with civil defense.
The war gaming in Europe is a small theater piece in the whole puzzle
“I still believe that the closest that we may have come was that rogue Russian submarine off Hawaii.”
What year did this occur?