sick of the mind games

This is so bizarre. My last few days in this hell hole are turning into a soap opera on a grand scale!
Last night, I had a talk with my boss's boss regarding my reasons for leaving (i.e, the boss in the middle who just does not know how to delegate work). I assumed that it was confidential and that if they took any action, it would be after i'd left.
But no, the big boss told the other manager, who called my immediate boss and told him -- and not in a subtle way...he said she said blah blah blah...
So my boss comes in post-lunch in a rage asking me why I said what I said...Now, may be I should have yelled back and stormed out...but I just got really embarassed and got the hell out of there until he was a bit calmer.(And this guy sits at the next desk -- like literally, just next to me)
Then, they must have told him that if he can make me stay, his ass is off the line...so now he's being extra-nice and asking me to change my mind and giving me work and stuff!
So I'm in a dilema...this is my last week here...should I just go to the absolute top i.e, to the MD of the organisation and complain about how the situation has been handled or do I just sit here like I'm all naive and don't know the games these MoFos are playing?
I'm not sure if the MD knows what these guys get upto...but then, how could he not be aware? They've all been here for ever! Somebody help me! I'm sick of these freaking mind games!