Well, that is a difficult situation indeed. Is there any bit of the card at all exposed? If so, you can (with battery OUT!!!) try a very sharp needle to press into the plastic surface so as to get a grip on it and try to wiggle the remainder out of the slot. Be very very careful...you can damage things if you are overly aggressive doing such things.
Occam's Razor nearly always applies when troubleshooting technology issues!
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