Andrew is an extremely nasty person, he was quite frightening with all that anger. Watch out any future partners! He needs to do a lot of growing up, and some self reflection (unlikely I feel).
Ann didn't say anything horrible at all about his family. She was just replying to something he said about her nomination, he said he didn't realise she'd seen the "behaviour", and she said she had, and so probably had his Mother and Grandma.
He didn't seem too upset about that at the time I noticed. I do wonder if all that outburst was put on for the camera, he has been playing the game all along. However, I do think he was really wound up, she gets under his skin.