OKay I have hard from my crew are 3 others guys banned for money glitching, they are playing on xbox (dont know if this is relevant)
They made about 20million and I think you get banned when you have f*cking loads of money because in your social club profile it shows how much money you made and you can not make 20mil after 2 weeks online because you can only sell a car after 24H igT. and they said rockstar employees are checking sites of potentional glitchers...
So if you already glitched and earned more than 5 million I think you can get easily busted because of the social club site.
Hope I could make some things clear..