In all fairness to Pulp Fiction I thought exactly the same when I read the question... IF there are issues over and above the normal protocols that exist when you leave a 'normal' company then perhaps you should have written that in your question. Everyone (most of us) try to help out on these forums but you've got to give us a bit of a 'heads up' and can't expect us to be mind readers of your particular situation.
To ask straight out 'how do I resign' is going to be viewed as a bit niave by most.
However...
Very sensible to cover your backside in this instance if the reports are true...
Good luck wherever you're going and I hope you get the situation sorted.
Just trying to put a balanced point of view....
