I think you're right.
Jean Paul Satre seemed to struggle a little with the implications of atheism, and in one of the last interviews he gave before he died he seemed to be making a pivot towards religious belief:
“I do not feel like the product of chance, a speck of dust in the universe, but someone who was awaited, prepared, prefigured. In short, a being that only a Creator could have placed here. And this idea of a creative hand refers to God.” (from “Nouvel Observateur”, 1980).
Reportedly, his atheist lover Simone de Beauvoir became outraged when she got wind of his 'conversion'. LOL