I'd take it (tow it) to a transmission shop long before I let a dealer muck with it. It's like bending over and saying "have fun GUIDO". Sorry about your problems.
I ran my car 4 times at the track once last year, same night as CobraR, just to do it. Once I survived the night with nothing broken I decided it was my last time. It sure was an adrenaline rush though.