You are not going to get any more info from him . Trials of this nature have never brought any positive results. It just ends up as a grandstand for them to air their views . Saddam , Milosovitch, Karadich ,and at Nurenburg, the Hague . They can drag on for years and cost a fortune. Do you think Gadaffi is going to admit to anything . Why should he ? He has nothing to gain . It might encourage his supporters to rally and give succour to other dictators who think that even if they are caught they might still get away with a life sentence and all the time their victims are not getting justice.
Look at the Nazis who were locked up for 20/30 years . The last being Hess .
It's nonsense blaming the new regime they couldn't control the rebels even had they wanted to, which I doubt.