Idler Arm hitting exhaust?

Hi guys

after driving for a while in my car i heard what seemed like my exhaust gasket was leaking (just changed it couple weeks ago)

after looking/hearing around the passenger side manifold (where the gasket leak was)

i noticed it came from under the car..

after further inspection i saw that my idler arm is rubbing against my exhaust tube! and that the grease nipple of my idler arm had rubbed a slit in my exhaust pipe!

i have a rough understanding of the suspension on these cars, but how on earth is it possible for this to happen??!