any substantial wear and tear can and will not be repaired by regreasing, proper greasing before the metal starts to wear away could prevent a badly damaged bearing, but no ammount of grease is going to replace worn metal
The bearing was in good shape other than needing grease. I have to hit it just right to get the noise. I have to be making a left turn and going over some uneven pavement at the same time.
Everything seems tight. I'm at a loss as to what it could be. These suspensions on our cars are beautifully simple; so then it doesn't leave a whole lot of possibilities. The only thing I can imagine it being is either the hub of the intermediate shaft. I just don't know for sure though.
I haven't heard a strut, strut bearing, hub, or the intermediate shaft make a sound as you described. All of those would be more of a clunk than a higher pitched clank. About the only thing I can think of in the suspension that would make that kind of noise are the end links, which I assume you've already checked. Perhaps it'* not in the suspension, maybe something more like a loose heat shield over the exhaust or something?