I also came down with flat foot.
After coming back from Brunei, I developed sharp pain in the
soles of my feet.
My MO explained that long hours of carrying heavy loads during
outfield caused the arches in my feet to literally collapse.
I was referred to a physiotherapist, who decided that my
collapsed arches were not severe enough to warrant a downgrade.
However, I was given 'excused lower limb activities' for a few
weeks.
well, i'm flat footed and never had any problems so far (fingers
crossed...fore rest of my life). still doing the 10km runs, yoga,
poley blah blah blah. thanking my lucky stars!