I looked into my engine bay this morning to check for any further damage other than the water pump pulley and belt. As I was inspecting each pulley (spinning them checking for damage) I noticed that they all spinned pretty easily except for the idler pulley. Although it still turns, it didn't turn freely like the other pulleys did. I had to actually grab it moderately hard and spin it. The other pullies spinned just using my fingers. I don't know if that sheds any light on this problem, but figured I'd share that. I'm wondering if the increased rotating friction speeded up the demise of the water pulley?