Fig.3. In the last 200 years many mummified mammoths were discovered in the thawing permafrost of Siberia. Considering the amount of fossil ivory commercialized in the same period, there must have been carcasses and bones of thousand of specimens.
"Anyway, the warming of the Canadian Arctic due anthropogenic climate change..."
After reading that I could take nothing he wrote seriously.
Silly scientists.
The Ebola outbreaks themselves showed why this scenario is highly implausible. The organisms caused extreme death rates in a short time, but in the process "burned through" their available hosts and then, as an inevitable results, died themselves. This is despite the fact that the areas in question had only minimal medical resources.
With modern human technology, a highly deadly disease could spread fast enough to stay ahead of its own killing of its hosts, but probably not otherwise.
Also, I can see how humans could pick up diseases from the mammoths they killed, but fail to see how mammoths could be infected by humans. Surely they weren't in any kind of close contact on a regular basis. Which is how we acquired most of our infectious diseases by transmission from our domesticates.