Now I'm wondering if unplugging the affected miner from the bus would work. Might be tough to do, but it would let me use the other seven miners on that module without having to try and repair the broken one.
I've done this. It works.
Just remove the screws and peel/pull it off (the thermal paste will stick a bit). Depending on which one it is, you may have to remove the backplane board to access all the screws.