i had problems with overcarbing all my big beers. on the last batch, an imperial red, i decided i didn't want to dump the batch. i tried a low-tech solution that worked! SLIGHTLY pry each cap just enough to relieve the pressure, let sit for 30 minutes to an hour or so (there will be foam that runs down the sides - don't worry) then recap tightly when foaming has stopped. wait a couple weeks and viola! it saved two cases of beer for me and didn't cost a thing.
I'd rather have a bottle in front of me than a frontal lobotamy!