A bit late but this might provide some insight and more importantly some peace of mind.
A while back I was having a weird problem with a Pentair pump, unrelated to your problem but I think I stumbled onto your answer nevertheless.
In the course of diagnosing my problem I was directed by Pentair to the manufacturer of the motor of the said pump.
My question was related to input voltage.
The technician explained to me that all their pool (pump) motors have a built-in reset on them that would trip if the motor is not turning at the design rpm. (so my issue was not voltage)
My guess is that a power fluctuation before or after the outage would have altered your motor rpm therefore tripping this built-in reset.
According to what he told me, it resets by itself after a while but did not specify what "a while" was, neither did I ask.
Not sure if that is what happened to you but it certainly fits.
Hope this sheds some light on your weird event...