Good God, a lot of miles on these cars. Carrier bearing failures generally seem to be more common with manual transmission cars, so I'm sort of surprised to see it occur with the Accord automatic (especially with such "low" mileage).

Ripping apart differentials is not for the faint of heart, and it would require an extremely experienced technician to accomplish something like this.

It sounds like these cars have been abused, in my opinion (as in continously driven hard).

I dont' know what more to say about that. I don't have anywhere near the expertise to know how to rebuild a differential, I just know how they operate.

You may have better luck posting this in our Engine Tech forum. Good luck.