Brad see the spring with eyelet on each end where the two arms hook to the wiper motor. Pull on the eyelet to stretch the spring a little bit so you can pull it off the end of the stud. That's what holds the wiper linkage to the motor. Then slide the eyelet off the other side to remove the other linkage arm. After you get the first eyelet off, you'll see how simple a retainer setup it is.
Brian