A friend shoved a mini version of a camera card into the slot of her laptop without the converter for the full size slot.
I retrieved it by taking a spark plug feeler gauge (the nearly foil-thin blades that come in a set) and snapping one off with some pliers. This left a slight lip on the end of the feeler so that when the feeler was slipped behind the card it gripped the far edge and the card could be pulled out.
A similar strategy with something a little heavier might do the trick for your remote.