Hi,
I got the card out a few minutes ago by forming a heavy duty plastic cable tie into a (flat) slight hook using a propane torch to heat it (and a pair of pliers to bend it). I didn't quite trust the paper clip thing, after all there is metal showing at the ends of even a plastic coated one. Of course the Mac should be powered down and the power cable and other connections removed. Shaking the thing did nothing for me, besides it is HEAVY. I
had to fish around a little while and rather deeply into the drive bay inserting the hook fairly high on the bay. Easy and gently does it! The hook did touch components of the drive mechanism before it delivered the SD Card.
Both, the drive and the SD card still work just fine.
Saved Cdn $400 quoted by BestBuy, who told me replaceing the drive was the only option.
Thanks to everyone here for their help!
Good luck.