Dave,
I should have said, "The reason the spoke and mass wheel doesn't lag is because no force resulting from tilting the axle is being applied to the "disk" (masses in this case)."
You're right that forces are being impressed upon the masses, I was just referring to a specific force. Didn't make that clear, sorry.
You said, "I think that tilting the hub will impose an out-of-plane force on the rotating weights. This out-of-plane or realignment force will be the sine of the angle of misalignment times the centripetal force."
I agree.