it would not piss me off, no. it was an accident. the wrench messed up a headset, the bike's sentimental value remains intact (or at least it should).

however, it shouldn't have happened and if you want to make it right you should listen to hockdub. this is not a small bike shop, it's a huge corporation. call corporate headquarters, be polite about it, make sure they're aware of the error as well as the inconvenience that it's caused you but don't get angry. you'll get it fixed and probably something extra for your trouble.