well, I double checked it last night - I don't own cone wrenches and I am a bit wary of doing surgery on rear hubs - call me a wuss but I have wrecked every rear hub I've poked around in. I did tighten down the furthest outward bolt on the freewheel side.
I think most of this wobbling was precipitated by my gorilla removal of the plastic spoke protector. I used pliers to yank it off after snipping a radial slit and some elbow grease and twisting was involved. I certainly didn't think I banged the freewheel around but who knows? Maybe I bent the axle slightly?
I hadn't ridden this bike much for a while (My wife was using it till she just bought her new C'dale) before getting on recently and noticing the wobble - I removed the spoke protector the night before taking it to a metric century, as my wife was riding her new bike.