Same here, uninstalled the old version, ran the queeries and installed 1.03 now nothing...
I don't think running the links through a public anonymizer will beat your other system, if there is any .htaccess of any kind the anonymizer will not process the link. Your last hack approach was good it simply needed some refinement where post editing took place in order to deal with duplicating the redirector code.
Hope you sort it out soon, as for myself I have put back the old system until its sorted out
Additionaly there was a =3.0.x privacy link MOD, it used the same principle as this one here and had no inherent problems with duplicate tags. Perhaps you could take a peek at the other KACK to see if you can't use the same approach for this hack