Re: I ate all the pies
A colleague had told me after a previous rebuild that he'd got away with swapping the control PCB on the drive. I tried this and - miraculously - the system came back up.
In the 80s I had lots of success with recovering data from dead (it was most often controller/logic (especially with IDE, but also some ST-506/412 (MFM/RLL)) rather than mechanical drive failure) drives.
Made for very happy customers when they were exchanging drive under warranty and inquired if it was possible to recover the data.