  In 2016 May, the intermediate polar FO~Aqr was detected in a low state for
the first time in its observational history. We report time-resolved photometry
of the system during its initial recovery from this faint state. Our data,
which includes high-speed photometry with cadences of just 2 sec, shows the
existence of very strong periodicities at 22.5 min and 11.26 min, equivalent to
the spin-orbit beat frequency and twice its value, respectively. A pulse at the
spin frequency is also present but at a much lower amplitude than is normally
observed in the bright state. By comparing our power spectra with theoretical
models, we infer that a substantial amount of accretion was stream-fed during
our observations, in contrast to the disk-fed accretion that dominates the
bright state. In addition, we find that FO~Aqr's rate of recovery has been
unusually slow in comparison to rates of recovery seen in other magnetic
cataclysmic variables, with an $e$-folding time of 115$\pm7$ days. The recovery
also shows irregular variations in the median brightness of as much as 0.2~mag
over a 10-day span. Finally, we show that the arrival times of the spin pulses
are dependent upon the system's overall brightness.
