In the first few weeks of the show he showed his true colours by constantly bitching about those he saw as beneath him with his little clique that included Lisa, Sam, Katie, Sandra etc.. hms who were known to be quite nasty and unpleasant. Since they all were evicted he's had to tone down that side of his personality to fit in. It doesn't mean he's any less of an arsehole than he was back then though.
Also he almost instigated an altercation with Travis and all because Travis retaliated at Ryan's constant belittling sniping within the safety and backing of his clique of course. That incident yet again show what Ryan is all about.