[Xenon481]

Seems to me I recall reading that certain forms/stages of TB can leaving scarring on the skeleton.

Right, I've heard of that, but they state that they used DNA testing to confirm that he had TB.

But, I've never heard of TB modifying human DNA strands in such a way as to be identifiable through DNA testing.

[Wonder Warthog]

"But, I've never heard of TB modifying human DNA strands in such a way as to be identifiable through DNA testing."

It doesn't. What they probably detected was the DNA residue of the TB bacterium itself in the tissues.