I say the best revenge is still living well (while they struggle).
I agree with Adam. Fukkem. Damn insulting if they ever took the time to know you.
Lots of opportunity for someone who actually knows what they are doing, and is willing to apply it.
Make the cork soakers pay by hitting them where it hurts. The only place they feel pain is in their bank accounts.
Indeed boy has no clue how that company is structured, and probably doesnt have the experience to figure it out on short notice.
Go take a position thats fairly stable, if not so well paying, with a company you "feel right" about joining.
That may be enough, and if not, id be willing to bet your old company will be calling you soon enough.