i would have thought that each wheel will be xray'd, although the wheel hasn't failed so that can be ruled out of the argument, blades we're lost when the rear bearing failed and the disk was intact.

the facts are:-

rear bearing failure
fried ECU
fried starter motor.

the starter motor will act as a generator if it is connected to the compressor nut vus sending high voltage to the ECU so at some point the starter coupling would have had to have coupled with the compressor nut or how else would the ECU have gotten fried?