In other words, this provider is using DPI, and including itself in the torrent tracking process.
Gee, I wonder what the motivation for doing that would be?!

Harvard Medical Students Rebel Against Big Pharma

The revolt began when a first year medical student “grew wary” when a professor promoted cholesterol drugs and “seemed to belittle a student who asked about side effects.” He later discovered that the professor, a full-time Harvard Medical faculty member, was a paid consultant to 10 drug companies, including manufacturers of cholesterol drugs

http://www.ahrp.org/cms/content/view/523/9/