well, there are testimonials out there for sure, on several sites - healthsalon (?), and miraclemineralstories.
scientific studies from one of the more famous characters working with DMSO out there, Dr. Stanley Jacob, clearly shows that this solvent is effective in bringing whatever (careful!) substances into the body.
we know how chlorine dioxide works,
so bringing these two chemicals together in order to attack a certain area on the body - makes sense.