Sorry that happened! As was mentioned above, your water pump shaft sheered off, (at the channel that the bearing runs on) due to that huge fan spacer. I had the same thing happen about 4yrs ago, and I learned the hard lesson: Don't use a fan spacer.
IMO, if you don't go with electric fans, you'll want to re-create an OE style set up, which will include a factory shroud. You'll want the fan blades sticking about 1/2-3/4th of their depth "into" the shroud opening. The rearmost section of the blades should be out of the shroud, in order to provide proper air flow off the blades.