My drivers side wiper today wiped itself clean over the left side of my car and got stuck there. When I set it back it continues to get stuck and out of syc with the other and hen get stuck on the side? Bad motor? Bad gears? bent arm? Any ideas?

 

Pop the plastic cover off at the base of the wiper, there is a 13mm nut there. Mine was 1/2 turn loose. I had the same issue 2 days ago.