First I removed the drive from its plastic case and plugged it in to a short USB extension lead (so I could turn it over) and plugged it in to my laptop.
Then I booted in to safe mode command prompt only.
I accessed the directory with the E:> Dir command and it gave me a list of the files on the disk.
Using the Del command I got the message Unable to Delete *** Disk is write protected.
I tried E:> Format E: and got Unable to format E: Disk is write protected.
Finally I keep reading the directory and every time the PC accessed the USB drive I ran a small screw driver over the tiny pins of the chip in the USB drive.
Eventually I got the message that the PC could no longer read the drive. I had corrupted the data.
I tried E:> Format E and this time the drive formatted without any problem.
I did however get a message that...There are open objects do you wish to close them?
The drive is now back in use and I did not have to throw it away with all my sensitive data on. Okay it is a kill or cure method but it worked for me.