Ok, irritatingly the Moyer article linked in that old article has been moved to here.
To be honest, as a professional statistician, looking at both the Moyer rebuttal and the Mangano original, both are problematic. Moyer's rebuttal is no rebuttal - one cannot simply draw a straight linear trend line and call that an analysis. While the points he raises are often reasonable, he should seek to justify his assertions.
Mangano's work involves more numbers at least, but looking only at the US Total Deaths result on page 6, I cannot replicate his p-value calculation with the data provided. His numbers are simply wrong, as far as I can see. I get a p=0.253, not p less than 0.00001.
I'm overall loathe to claim deliberate fraud instead of an honest error.