Not read the article but have watched the behaviour in question. I don't think they were being racist per se, but they were/ARE being bullying. Danielle and Jo have made themselves look dreadful and I don't think they are aware of it at all. Not surprised re Danielle.. she seems to have 14 year old mentality all round (bet Teddy has been cringing!) but Jo has really let herself down.
Jade is just Jade and one thing that can be said for her is that she will say as much to anyone's face and did make some attempts and sorting it the greivances with her without a little cliquey audience whereas Danielle and Jo are clearly content to bitch in corners like the pair of nasty cows they clearly have the ability to be, more fool them.
I think Shilpa has behaved with dignity throughout. Good on her.