Burnsie, should you:
1-Be the bigger man and say nothing.
2-Dish the dirt and set the record straight.
The aformentioned clause in your severance package prohibiting you from speaking out on these matters notwithstanding (and doesn't that clause work BOTH ways, if vicious rumors are emanating from their direction?), I believe it's fairly obvious that it'd make for MUCH more entertaining reading if you spoke out.
In the end, isn't that your main job now, to make THIS place more readable and more compelling?
That being the case, I believe your choice is clear!
Cough!!