Curved bones sounds like malnutrition, namely ricketts or vitamin D deficiency. Having read some about how the Japanese treated Western POWs, I wouldn't be surprised.
Seems likely. His wife (before they were married) were also held by the Japanese in Indonesia. She was mostly Indonesian by decent, but because she was living in a Dutch part of Jakarta, she and the rest of the people there were all held in camp. There, they allegedly only received one cup of rice per day.
