If you make up your mind not to bail him out if he is returned to jail on Monday, perhaps you won't want to take his calls if they make you doubt your decision
Here's how I handle it: I never do court/bail/jail with or for my son.
He knows this so the few times he has been in jail I don't hear about it until later when he is out. If he gets himself into a jam, only the consequences might teach him to live his life crime-free. Right now he has a warrant from failure to appear on traffic violation. It is none of my business.My friend who is a lawyer gave him advice and he ignored it.