It looks like you have a rear wiper module that has gone out, here is a wiring diagram so you can trace the wires. But I would check the system powers and grounds because an absence of either can cause the motor to stay running. Also there is a trigger from the BCM I would cut that to see if it is a BCM issue.
Please let us know happens so it will help others.
Images (Click to enlarge)
Thursday, January 5th, 2017 AT 10:03 AM