I beat it up a little and dropped it onto the floor but it still won't talk. Maybe the motor is burned out.
The only reason I'm still interested in this drive is because it's the ONLY one that when attached to the SCSI bus (without the power cable connected) will give me the SuperMac logo on-screen.
The other SCSI disks I've tried won't do this. So perhaps their active termination isn't working all that well.