2001 Oldsmobile Aurora Wind Shield Wipers - R side is only

2001 Oldsmobile Aurora 6 cyl Two Wheel Drive Automatic 87K miles

This AM driving to work in the rain I had to turn on my wipers. I noticed that the passanger wiper is not working correctly. It wants to engage and travels about a quarter of it's normal cycle then thuds back down to rest point. The driver side is working normally however somehow while I was driving the two wipers became entagled and I had to stop and pull them apart. The drivers wiper now looks bent. Does each wiper have it's own motor or are they linked by connection rods? What should I do and how do I get at the assembly?