Ron would not do that. First, he's not the sort of person who would write an email hoping it would be leaked. If he has something to say, he just says it. But also, if he'd written this to be leaked, it wouldn't sound like this; he wouldn't have said some of the things he did, and he would have showed it to his posse, who would have fixed the misspelling of "entrepreneur."
I suspect he is mortified this got out. It must have been leaked by one of the super-angels themselves. Which is a little surprising, considering the things it says about them. There must be at least one super-angel so eager for attention that he believes there's no such thing as bad publicity.