Now perhaps there is another explanation but it seems to me given what is described that a pilot did this unintentionally / unconsciously or they did it on purpose.
As for why it took 10 seconds to notice and switch back to RUN, probably because cutting off the fuel is not an instant shutdown and I imagine if it happened to a pilot during takeoff it might take 2 or 3 seconds for the engines to shut down and the remaining time to wonder wtf happened and focus on the issue and rectify it.
So the most likely reason they both changed state, one and then the other is because one of the pilots did it. Maybe they did it accidentally - some kind of brain fart, or maybe they did it intentionally. Investigators will likely want to know which pilot was responsible and figure out if they had anything going on that would suggest a motive.
Since there are already FPGA based C64/C128 boards including one already called Ultimate 64, I wonder if this is just an official rebadge of an existing product perhaps with a matching case to go with it.
C'est magnifique, mais ce n'est pas l'Informatique. -- Bosquet [on seeing the IBM 4341]