One thing I have done in the past to (temporarily) revive a dead drive, is to stand it vertically rather than sit it flat. The read/write heads that extend in between the platters can often misalign, and gravity wants them to droop down. This is often the cause for clicking and other bad noises. If you stand the drives vertically (Try all 4 sides - you want to try to make the heada "dangle" down, rather than be stood on end etc), you may be able to get enough proper spin out of it to remove any data that me be required to be saved.
Obviously a backup is your friend in this scenario, although as you are wiping it, you are probably (hopefully) not in a position to be losing data.
One thing you can try is to check the SMART status (Apple > About this Mac > System Information - dig about) to see if it is reporting errors.