Fan Clutch Seized?

[jake12tech]

Hey folks. I was taking a look at my '99 E300 today in the engine bay. I just replaced a fan blade that broke at 70MPH that dented my hood and took out my damn radiator hose and shroud, but broke nothing else upon close and detailed inspection. I was extremely shocked that it didn't damage the radiator. I looked at it to find no holes or punctures. Put the new blade in and realized my fan clutch doesn't move clockwise like it should without some heavy elbow grease. Does this explain why the fan blade broke lose and decided to self destruct? I think it just seized up. There's no play in the bearing itself..

You'd think after paying $40K to go to one of the best trade schools in my area for diesel technology, you'd think they go in-depth on cooling systems, but nope.

Should I replace the water pump as well? Since I can imagine they wear at the same rate as the clutch.