They've admitted to being insolvent? It seems really irresponsible to allow trading of assets they don't hold in custody.
Seems like you're purposefully trying to conflate insolvency with being the victims of theft. They are obviously not insolvent, they simply don't have the Monacoin to reimburse their holders, and whether you agree with it or not, they feel they did not violate the terms of their agreement with their customers, and are under no obligation to reimburse them.