This was possibly an expensive experiment in terms of social capital...
I think it would have been better to have waited longer. After only three days, his response seems reasonable. Perhaps after two weeks, it would be more difficult to believe that he would have ever published your data.
On the other hand, people would be reading his site and drawing the wrong conclusions about D supplementation for two weeks. That's some further-spread epistemic pollution costs.
Master copy lives on gwern.net