First, the hammer method should be avoided as a general approach to fixing things.
Second, if the original problem of the wipers not turning off were caused by a faulty wiper motor, then unplugging the wiper switch would NOT have turned off the wipers. This means there's more than one problem in the wiper circuit.
Third, the current problem (no intermittent or park) is either a wiper motor problem or problem with the integrated control unit or its wires that run to the wipers.