I know we are not going to see things the same way on this, but I didn't see where Rachael had turned her back on her alliance. She had spent some time trying to find a way to get the target off of Brett and on to someone else, while she herself was on the block. As to swearing her alliance to Bay, how many people haven't done that over the years. About half the people who play the game swear their allegiance or agree to work with the HOH and that all changes as soon as the power changes. IMHO, Angela was just looking for an excuse to sell Racheal out. She knew that going to Tyler would be a death sentence for Rachael since she was sitting on the block.