As far as I can see this makes the enum how to recover the device superfluous because you will most likely always need a bus reset to get out of this again.That depends on the kind of fault the device has encountered and the bus it is sitting on. There could be buses that don't support reset.
That is even more an argument to not expose this in the uevent.
Getting the device working again is strongly device dependent and can't be handled in a generic way.
Regards,
Christian.
Raag