There are reports that ISOBUSTER can get the files out from such media.
Bob
I finished recording on a disc, did not finalize it, took it out to play on my PC- Media Player. Was not able to read it on the PC. Put it back into the videocamera and tried to finalize it. Got message that disc in incorrectly formatted. Tried to format it again but get the message that I will lose all the data. Catch 22. HOW CAN I READ THE DISC and not lose the data??

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic