He was arrested and she was detained within the same jurisdiction? Is that so unusual? I'm not saying there wasn't foul play, but what else?
His wife was visiting him from the US after he was locked up. Her passport was snatched from her and used to convince Ted to sign what they wanted him to sign, even though he couldn't read French. You could say his 'confession' was coerced, made under duress or torture...
There are lots more allegations of Monaco Gestapo misconduct, but this is off the top of my head.