Contrary to what you seem to be saying, the studies claiming to show a reduced incidence of HIV in circumcised men did not say anything about a reduced transmission rate to HIV positive men’s partners. The study that was recently done about transmission rate actually found an *increased* HIV transmission rate to female partners when the male partner was circumcised as opposed to intact. The study was ended early, but it’s unclear why they ended it early. A great blog post (from an anti-circumcision view, but his conclusions are quite valid, IMO) that talks about the possible implications of that study and the fact that it was ended early can be found here:

http://www.circumcisionandhiv.com/2009/07/africa-why-did-they-stop-the-study-to-examine-hiv-infection-among-partners-of-circumcised-men.html