The twist I've been seeing is trying to push the idea that the term "whore" isn't sexist in nature, and it was totally alright to use, because Hillary is, in fact, a Corporate Whore. And that's not sexist because "Corporate Whore" isn't sexist, even though it totally still is. Another popular one is "it wasn't directed at her, so why are you assuming it was meant to be about her, hmmm are you maybe the sexist here????"
My belief is you don't even hint at any sort of possibly sexist phrase when your opposition is a prominent female politician. Just play it safe, no need to try and bend and twist phrases to try and make people believe they aren't sexist in nature.
It's just weird spin for the sake of spin, as Bernie himself has said the comments were inappropriate. It's totally stupid to try and keep bringing it up. His supporters need to calm their seething, irrational hatred of Hillary and realize it's not going to get him elected.