Scout, thanks for posting, very interesting, and a compelling technical argument in terms of the similarity between the 70's and now.
The one thing that gives me pause about the analysis and conclusion is that the value of the EURO weighs so heavily on the dollar index (57%, is it?), and the EURO is not so well, that might keep the dollar from the freefall suggested. I can't comment on the competing currencies of the 70's, though, so my point may well be invalid.