You bet he did !
He said that when he understood he was lost in those dark caves, with no light, that his depressed state of mind disappeared and he found a new courage. He was all to fight, to survive this ordeal and he (quite) never lost courage again.
The first 5 or 6 days, he kept walking in the dark, in the 5 km long maze, without stopping, without eating. After that, feeling a bit feable, he stopped and make camp with some old plastic foils, in which he wrapped himself to sleep.
Only during the last week he started to have doubts about his chance of survival, because he was feeling so cold.
Temp in the cave was about 14°C. Not such a great deal, when you have food to fuel your internal furnace !!
His first night home he didn't sleep : he wanted for dawn, to be sure there would be light again, to be sure it was not a dream, that he was really home and safe again.
He spent most of his time thinking about DIY jobs he wanted to make in his house.
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Alain