Yes, his mother accompanied him to court but so did the rest of his family. It's the singling out of his mother that annoys me, because I haven't read anything that has implied that she has behaved particularly badly apart from being supportive of her son.
I like to think that I'd be leaving my son to rot if my son behaved like hers did. And yet... I'm a mother, he's my son. Even if he did something appalling I'd probably still love him, because he's my son. (Disclaimer: my son is a small child, so I don't actually know how I'd react). Even arseholes, as PJ undoubtedly is, often have mums who love them.