Even I wouldn't dare touch margin. If I don't have the money, I don't play.
He should've just filed bankruptcy and/or serve jail time. Nothing worth dying for.
I would not advise anyone I know to trade stocks, let alone options.
Just invest in mutual funds, etf or individual stocks, set and forget it.
Reset allocation once or twice a year.
If they want to swing stocks, get another account that you're willing to lose on, but no margin.