If you are referring to the bees and Ron Hoskins, I might be able to answer that but I don't know the science around it. I went to a talk by I think it was Prof Steve Martin, he was talking about varroa tolerance in bees and VSH and the likes and Ron Hoskins came up in the talk as he was asked by a member of the audience. In essence from memory it is all about the dominant diseases in his bee population, 1 form of DWV being more deadly than the others apparently (and I am open to being corrected here) but the dominant DWV version in Ron's bees is a type that is less lethal or non lethal, so the bees survive but also, as its the dominant type, it is crowding out more deadlier variant which means it cant take hold. So backs to his queens, I am under the impression they have taken his queens and put them in other colonies and the colonies die out because in the general bee population the dominant DWV type is the deadly version. I haven't read the link you posted to his site btw. Interesting to hear what others have to say on this.
Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted - Ralph Waldo Emerson