Maybe you should have been taking it easy on your new head and concentrating on accellerating rather than power shifting
One thing I've always done, when something major has broke: take it easy for the first few miles as far as beating on the car goes, then go back and make sure everything is nice and snug before you go beating on it. You graduated from Wyotech? Just yank the tranny, rebuild it, and slap it back in, you should be a pro now! If not, you will need to be to make it in this market!
Now quit whining and go fix it!