Never been certain the extent to which stubbornness is a flaw. Without it a person makes mistakes. With it a person makes mistakes. And here, it's possible The Rabbit of Usk's Book Five Point One is little more than an act of stubbornness. What is the matter with your writer of pulp other than the usual derailments.
Could well be some sort of elderly hormonal activity deep in the limbic system.
In some of my fellow creatures this sort of crazed limbic activity, unbalanced
by anything remotely reasonable leads to something like a run for the American
Presidency. Tragic that in your writer of pulp it leads to something like Book
Five Point One.