you can do the following ludicrous thing that saved a few of my sacred but overcarbed bottles once, get a nice sturdy church key opener and, chill a few bottles completely, very very gently put pressure on the cap like you are going to open it until you just start to hear gas escape, the caps won't permanently bend if you use a light touch. let as much out as you can, at some point the cider will foam to the top, then do the next bottle, repeat with each bottle until you are fed up and the foam no longer reaches the top, put back in the fridge to settle and they should be ok. this takes a long time, is really dull, and is best done while watching sports and drinking cider