im sure its possiable somehow somewhere. The question is how deep are your pockets and how important are they?
Data Recovery from failed normal HDD's (they remove the magnetic platters and manually mount / read them) gets quite expensive.
Here in australia general starting money is around $400
for the SDHC, ur going to get VERY expensive VERY quickly as some very precise work (if even possible)
Most people back away at the mention of the normal data recovery costs, let alone what your looking at.
everything is possible its just cost. Im sure if it was some russian nuclear secrets the CIA would have it up and going again in no time.