I found the article - it's not lost, it's just on the member's section of Aikido Journal. (Everyone should join! The amount of primary source material that Stanley Pranin is releasing these days is amazing.
"A Consideration of Aikido Practice Within the Context of Internal Training."
Anyway, I think it answers my viewpoint on this subject pretty completely (and therefore, answers Gordon's question as best I can).
Best
Ellis Amdur