If this is for real, it's a great day in medicine.
The man received a bone marrow transplant which had genes that were HIV immune.
Bone marrow transplants have a relatively high rate of mortality, so this is not without risk. And finding the right donor would be difficult.
Nevertheless, it offers hope.
Would stem cells from other parts of the body of these HIV-immune people work? Perhaps this would be an interesting avenue to explore.
H/T: Jivin' J