I see a couple of things happening here.I think Robert was reprising typical good moves from a show like Blind Date. In that light, he is very funny and did a good job of being interesting for the camera. Then suddenly he's being castigated all over the media, including the internet, as a weirdo-creepy-sick degenerate. He's just doing improv acting, and people are personally acting him! I think he's in shock and trying to figure out how to get his self-image back.
As far as the hit women Laura and Kimberly go, I agree with others who have said that they are trying to adjust their criticism to shape the vote, while still keeping their image as nasty bitches going--because that dynamic is what drives the show.
(Others may have said similar things above. I am late coming to the discussion today and I'm posting before I read everything--sorry.)