Has anyone gone to the trouble of getting TSA certified to provide
foreign flight training on this list?

I did. They didn't even make me come in. I filled out the application
on the TSA web site, and then called the FSDO for my passwoed. They
had no idea they were supposed to be involved, but after looking at the
web site conceded that they were. They emailed me my password a few
weeks later.

Michael