Because James, Meg and Jackie realized that if Vanessa is nominated, she will go after Becky, John and Steve whereas Shelli will most likely go against James, Meg and Jackie, so they decided that keeping Vanessa is safer seeing how it's a double eviction tonight. Also, Shelli found out that James was wearing Clay's t-shirt or something and made a big fuss about it. And finally, they're worried about how close Shelli and Becky are becoming, whereas Vanessa's game is practically in shambles now.
