3 Suggestions:

1) Just use a catch-all disclaimer like XPT has for the Monkey Cage, alleging that the content therein is satire, parody, or outright lies/fiction.

2) You could write your blog in the style of those douchebag insider columns they have in magazines like Movieline wherein they merely hint at the identity of the parties involved, or use cryptic nicknames. The only potential problem here is that people may misinterpret the artful vagueness and apply it to someone else...it's a little like cold reading in that regard. I read one of these columns and it gave me the impression that they were trying to say that George Clooney was hooking up with male crewmembers on the set of 'From Dusk Till Dawn'...only time will tell if it's true or not. Although the women he dates do tend to be classic beard material...

3) The Bill Asher/Stefani Morgan thing is done...she already spilled the beans over on ADT many, many moons ago. I really fail to see what exclusive you're going to have there.