Sounds like the same thing happened to them but during daytime the strobes wouldn't be noticed and they might have missed the higher than normal idle. It would be easy to check though with the FDR. I don't think the crew was totally at fault. As in all accidents, if they are dead, they are the easiest and cheapest way out.
The report speaks clearly, the Engine Idle has been always at Ground Idle
The ONLY relays that was malfunctioning was the R2-5....