Hub replacement is a normal procedure for a prop shop.If this is a OMC I/O you may have an issue with the drive coupler.
If it is the coupler you may smell rubber burning.
You may want to draw a water proof line across the hub and test run.
I believe the Electric shift uses a shear pin or drive pin.Check it.
Typically a spun hub will work up to a certain power total failure is unusual.